diff --git a/api_v1/external_product_image_backfill.py b/api_v1/external_product_image_backfill.py
new file mode 100644
index 0000000..6241733
--- /dev/null
+++ b/api_v1/external_product_image_backfill.py
@@ -0,0 +1,136 @@
+from collections.abc import Callable
+
+from django.db.models import Q
+
+from printing.models import PrintingJob
+
+
+def extract_request_name(job: PrintingJob) -> str:
+    raw = job.external_raw or {}
+    if isinstance(raw, dict):
+        request_name = str(raw.get("YanSe") or "").strip()
+        if request_name:
+            return request_name
+    return str(job.external_product_name or "").strip()
+
+
+def run_external_product_image_backfill(
+    *,
+    fetch_image: Callable[[str], dict],
+    upload_image: Callable[[object, dict], None],
+    merchant_id: int | None = None,
+    product_id: int | None = None,
+    limit: int | None = None,
+    dry_run: bool = False,
+    on_success: Callable[[str], None] | None = None,
+    on_error: Callable[[str], None] | None = None,
+    on_info: Callable[[str], None] | None = None,
+) -> dict:
+    queryset = (
+        PrintingJob.objects.filter(
+            printing_order__external_order_id__isnull=False,
+        )
+        .exclude(printing_order__external_order_id="")
+        .filter(Q(product__image__isnull=True) | Q(product__image=""))
+        .select_related("product", "printing_order", "product__merchant")
+        .order_by("-id")
+    )
+
+    if merchant_id:
+        queryset = queryset.filter(product__merchant_id=merchant_id)
+
+    if product_id:
+        queryset = queryset.filter(product_id=product_id)
+
+    if limit is not None:
+        limit = int(limit)
+        if limit <= 0:
+            raise ValueError("limit must be greater than 0")
+
+    success_count = 0
+    failed_count = 0
+    skipped_with_image_count = 0
+    skipped_without_request_name_count = 0
+    skipped_duplicate_product_count = 0
+    selected_count = 0
+    scanned_count = 0
+    seen_product_ids = set()
+
+    for job in queryset.iterator(chunk_size=1000):
+        scanned_count += 1
+        product = job.product
+        if product.image:
+            skipped_with_image_count += 1
+            continue
+
+        if product.id in seen_product_ids:
+            skipped_duplicate_product_count += 1
+            continue
+
+        request_name = extract_request_name(job)
+        if not request_name:
+            skipped_without_request_name_count += 1
+            continue
+
+        seen_product_ids.add(product.id)
+        selected_count += 1
+
+        if dry_run:
+            if on_info:
+                on_info(
+                    "[DRY-RUN] "
+                    f"job_id={job.id} "
+                    f"product_id={product.id} "
+                    f"merchant_id={product.merchant_id} "
+                    f"product_name={product.name} "
+                    f"request_name={request_name}"
+                )
+        else:
+            try:
+                image_payload = fetch_image(request_name)
+                upload_image(product, image_payload)
+            except Exception as exc:
+                failed_count += 1
+                if on_error:
+                    on_error(
+                        "补图失败: "
+                        f"job_id={job.id} "
+                        f"product_id={product.id} "
+                        f"merchant_id={product.merchant_id} "
+                        f"product_name={product.name} "
+                        f"request_name={request_name} "
+                        f"error={exc}"
+                    )
+            else:
+                success_count += 1
+                if on_success:
+                    on_success(
+                        "补图成功: "
+                        f"job_id={job.id} "
+                        f"product_id={product.id} "
+                        f"merchant_id={product.merchant_id} "
+                        f"product_name={product.name} "
+                        f"request_name={request_name}"
+                    )
+
+        if limit is not None and selected_count >= limit:
+            break
+
+    payload = {
+        "scanned": scanned_count,
+        "selected": selected_count,
+        "success": success_count,
+        "failed": failed_count,
+        "skipped_with_image": skipped_with_image_count,
+        "skipped_without_request_name": skipped_without_request_name_count,
+        "skipped_duplicate_product": skipped_duplicate_product_count,
+        "merchant_id": merchant_id,
+        "product_id": product_id,
+        "limit": limit,
+        "dry_run": dry_run,
+    }
+
+    if dry_run and on_info:
+        on_info("dry-run 完成")
+
+    return payload
diff --git a/api_v1/management/commands/backfill_external_product_images.py b/api_v1/management/commands/backfill_external_product_images.py
index 94f032f..5b1fbb4 100644
--- a/api_v1/management/commands/backfill_external_product_images.py
+++ b/api_v1/management/commands/backfill_external_product_images.py
@@ -1,8 +1,7 @@
 from django.core.management.base import BaseCommand, CommandError
-from django.db.models import Q
 
+from api_v1.external_product_image_backfill import run_external_product_image_backfill
 from api_v1.tasks import _fetch_external_product_image, _upload_product_image
-from printing.models import PrintingJob
 
 
 class Command(BaseCommand):
@@ -18,114 +17,25 @@ class Command(BaseCommand):
             help='仅输出将处理的产品，不实际请求外部 API 或写库',
         )
 
-    @staticmethod
-    def _extract_request_name(job: PrintingJob) -> str:
-        raw = job.external_raw or {}
-        if isinstance(raw, dict):
-            request_name = str(raw.get('YanSe') or '').strip()
-            if request_name:
-                return request_name
-        return str(job.external_product_name or '').strip()
-
     def handle(self, *args, **options):
-        queryset = (
-            PrintingJob.objects.filter(
-                printing_order__external_order_id__isnull=False,
-            )
-            .exclude(printing_order__external_order_id='')
-            .filter(Q(product__image__isnull=True) | Q(product__image=''))
-            .select_related('product', 'printing_order', 'product__merchant')
-            .order_by('-id')
-        )
-
         merchant_id = options.get('merchant_id')
-        if merchant_id:
-            queryset = queryset.filter(product__merchant_id=merchant_id)
-
         product_id = options.get('product_id')
-        if product_id:
-            queryset = queryset.filter(product_id=product_id)
-
         limit = options.get('limit')
         if limit is not None:
             if int(limit) <= 0:
                 raise CommandError('--limit 必须大于 0')
             limit = int(limit)
 
-        success_count = 0
-        failed_count = 0
-        skipped_with_image_count = 0
-        skipped_without_request_name_count = 0
-        skipped_duplicate_product_count = 0
-        selected_count = 0
-        scanned_count = 0
-        dry_run = bool(options.get('dry_run'))
-        seen_product_ids = set()
-
-        for job in queryset.iterator(chunk_size=1000):
-            scanned_count += 1
-            product = job.product
-            if product.image:
-                skipped_with_image_count += 1
-                continue
-
-            if product.id in seen_product_ids:
-                skipped_duplicate_product_count += 1
-                continue
-
-            request_name = self._extract_request_name(job)
-            if not request_name:
-                skipped_without_request_name_count += 1
-                continue
-
-            seen_product_ids.add(product.id)
-
-            selected_count += 1
-            if dry_run:
-                self.stdout.write(
-                    '[DRY-RUN] '
-                    f'job_id={job.id} '
-                    f'product_id={product.id} '
-                    f'merchant_id={product.merchant_id} '
-                    f'product_name={product.name} '
-                    f'request_name={request_name}'
-                )
-            else:
-                try:
-                    image_payload = _fetch_external_product_image(request_name)
-                    _upload_product_image(product, image_payload)
-                except Exception as exc:
-                    failed_count += 1
-                    self.stderr.write(
-                        self.style.ERROR(
-                            f'补图失败: job_id={job.id} product_id={product.id} merchant_id={product.merchant_id} '
-                            f'product_name={product.name} request_name={request_name} error={exc}'
-                        )
-                    )
-                else:
-                    success_count += 1
-                    self.stdout.write(
-                        self.style.SUCCESS(
-                            f'补图成功: job_id={job.id} product_id={product.id} merchant_id={product.merchant_id} '
-                            f'product_name={product.name} request_name={request_name}'
-                        )
-                    )
-
-            if limit is not None and selected_count >= limit:
-                break
-
-        if dry_run:
-            self.stdout.write(self.style.SUCCESS('dry-run 完成'))
-
-        self.stdout.write(
-            self.style.SUCCESS(
-                '完成: '
-                f'scanned={scanned_count} '
-                f'selected={selected_count} '
-                f'success={success_count} '
-                f'failed={failed_count} '
-                f'skipped_with_image={skipped_with_image_count} '
-                f'skipped_without_request_name={skipped_without_request_name_count} '
-                f'skipped_duplicate_product={skipped_duplicate_product_count}'
-            )
+        payload = run_external_product_image_backfill(
+            fetch_image=_fetch_external_product_image,
+            upload_image=_upload_product_image,
+            merchant_id=merchant_id,
+            product_id=product_id,
+            limit=limit,
+            dry_run=bool(options.get('dry_run')),
+            on_success=lambda message: self.stdout.write(self.style.SUCCESS(message)),
+            on_error=lambda message: self.stderr.write(self.style.ERROR(message)),
+            on_info=lambda message: self.stdout.write(message),
         )
+
+        self.stdout.write(self.style.SUCCESS(f'完成: {payload}'))
diff --git a/api_v1/tasks.py b/api_v1/tasks.py
index b530300..3521a1b 100644
--- a/api_v1/tasks.py
+++ b/api_v1/tasks.py
@@ -31,6 +31,7 @@ from api_v1.mdy_plate_order_staging_tiia_upload import (
     build_default_tiia_rate_limiter,
     upload_mdy_plate_order_staging_plate_images_to_tencent_tiia,
 )
+from api_v1.external_product_image_backfill import run_external_product_image_backfill
 from printing import models as printing_models
 
 
@@ -424,6 +425,37 @@ def _upload_product_image(product, image_payload: dict):
     product.save(update_fields=['image', 'updated_at'])
 
 
+@shared_task(bind=True)
+def backfill_external_product_images(
+    self,
+    merchant_id: int | None = None,
+    product_id: int | None = None,
+    limit: int = 500,
+    dry_run: bool = False,
+):
+    """
+    为来自外部印染订单的产品补图。
+
+    仅处理：
+    - printing_order.external_order_id 非空
+    - product.image 为空
+    """
+    payload = run_external_product_image_backfill(
+        fetch_image=_fetch_external_product_image,
+        upload_image=_upload_product_image,
+        merchant_id=merchant_id,
+        product_id=product_id,
+        limit=max(1, int(limit or 500)),
+        dry_run=bool(dry_run),
+        on_success=lambda message: logger.info(message),
+        on_error=lambda message: logger.error(message),
+        on_info=lambda message: logger.info(message),
+    )
+    payload["task_id"] = self.request.id
+    logger.info("外部印染订单产品补图完成: %s", payload)
+    return payload
+
+
 def _record_printing_external_sync_failure(*, run_date, record: dict, error: str):
     external_record_id = _extract_positive_int(record.get('ID'), field_name='ID', allow_blank=False)
     obj, _created = api_models.PrintingExternalSyncFailure.objects.get_or_create(
diff --git a/api_v1/urls.py b/api_v1/urls.py
index ce74699..6d9c6cd 100644
--- a/api_v1/urls.py
+++ b/api_v1/urls.py
@@ -33,6 +33,7 @@ from .views.parameters import StateParameterViewSet
 from .views.users import CreateUserWithProfileView
 from .views.mingdaoyun import MDYPlateOrderStagingViewSet
 from .views.shipment import (
+    SalesItemDetailView,
     SalesItemByCustomerView,
     SalesItemByPrintingOrderView,
     SalesItemCreateView,
@@ -322,6 +323,11 @@ urlpatterns = [
         SalesItemByPrintingOrderView.as_view(),
         name="sales_items_by_printing_order",
     ),
+    path(
+        "shipment/sales-items/<int:pk>/",
+        SalesItemDetailView.as_view(),
+        name="sales_item_detail",
+    ),
     path(
         "shipment/sales-items/", SalesItemCreateView.as_view(), name="sales_item_create"
     ),
diff --git a/api_v1/views/shipment/__init__.py b/api_v1/views/shipment/__init__.py
index 4cdebc0..2062886 100644
--- a/api_v1/views/shipment/__init__.py
+++ b/api_v1/views/shipment/__init__.py
@@ -4,6 +4,7 @@ Shipment API 模块
 提供出货单和销售品相关的 API 接口
 """
 from .views import (
+    SalesItemDetailView,
     SalesItemByCustomerView,
     SalesItemByPrintingOrderView,
     SalesItemCreateView,
@@ -14,6 +15,7 @@ from .views import (
 )
 
 __all__ = [
+    'SalesItemDetailView',
     'SalesItemByCustomerView',
     'SalesItemByPrintingOrderView',
     'SalesItemCreateView',
diff --git a/api_v1/views/shipment/serializers.py b/api_v1/views/shipment/serializers.py
index 0c35880..057dda2 100644
--- a/api_v1/views/shipment/serializers.py
+++ b/api_v1/views/shipment/serializers.py
@@ -249,6 +249,7 @@ class SalesItemSerializer(serializers.Serializer):
     remark = serializers.CharField(read_only=True)
     printing_job_id = serializers.IntegerField(read_only=True)
     printing_order_id = serializers.SerializerMethodField()
+    external_order_id = serializers.SerializerMethodField()
     customer_id = serializers.IntegerField(read_only=True)
     customer_name = serializers.SerializerMethodField()
     shipment_id = serializers.IntegerField(
@@ -276,6 +277,16 @@ class SalesItemSerializer(serializers.Serializer):
             return printing_job.printing_order_id
         return None
 
+    def get_external_order_id(self, obj):
+        external_order_id_map = self.context.get("external_order_id_map", {})
+        if obj.printing_job_id in external_order_id_map:
+            return external_order_id_map[obj.printing_job_id]
+
+        printing_job = obj.get_printing_job()
+        if printing_job and getattr(printing_job.printing_order, "external_order_id", None):
+            return printing_job.printing_order.external_order_id
+        return None
+
     def get_customer_name(self, obj):
         customer_name_map = self.context.get("customer_name_map", {})
         if obj.customer_id in customer_name_map:
@@ -293,6 +304,36 @@ class SalesItemSerializer(serializers.Serializer):
         return None
 
 
+class SalesItemDetailSerializer(SalesItemSerializer):
+    """
+    销售品详情序列化器。
+
+    在列表字段基础上补充关联印染任务的产品图片。
+    """
+
+    product_image_url = serializers.SerializerMethodField()
+
+    def get_product_image_url(self, obj):
+        product_image_map = self.context.get("product_image_map", {})
+        if obj.printing_job_id in product_image_map:
+            return product_image_map[obj.printing_job_id]
+
+        printing_job = obj.get_printing_job()
+        if not printing_job or not getattr(printing_job, "product", None):
+            return None
+
+        primary_url = printing_job.product.get_primary_image_url()
+        if primary_url:
+            return primary_url
+
+        if printing_job.product.image:
+            request = self.context.get("request")
+            if request:
+                return request.build_absolute_uri(printing_job.product.image.url)
+            return printing_job.product.image.url
+        return None
+
+
 class ShipmentSalesItemCustomerSerializer(serializers.Serializer):
     """
     由未出货销售品反推的客户摘要序列化器。
diff --git a/api_v1/views/shipment/test_api.py b/api_v1/views/shipment/test_api.py
index 69abe7c..c306121 100644
--- a/api_v1/views/shipment/test_api.py
+++ b/api_v1/views/shipment/test_api.py
@@ -81,6 +81,7 @@ class SalesItemByPrintingOrderAPITestCase(TestCase):
             width="150cm",
             process=self.process,
             created_by=self.user,
+            external_order_id="EXT-PO-001",
         )
 
         # 创建印染任务
@@ -216,6 +217,8 @@ class SalesItemByPrintingOrderAPITestCase(TestCase):
         self.assertEqual(item["position"], "A1-01")
         self.assertEqual(item["remark"], "备注信息")
         self.assertEqual(item["printing_job_id"], self.printing_job1.id)
+        self.assertEqual(item["printing_order_id"], self.printing_order.id)
+        self.assertEqual(item["external_order_id"], "EXT-PO-001")
         self.assertIsNone(item["shipment_id"])
         self.assertIsNone(item["shipment_date"])
         self.assertIsNotNone(item["created_at"])
@@ -484,6 +487,7 @@ class SalesItemByCustomerAPITestCase(TestCase):
             width="150cm",
             process=self.process,
             created_by=self.user,
+            external_order_id="EXT-CUST-001",
         )
         self.printing_job = printing_models.PrintingJob.objects.create(
             merchant=self.merchant,
@@ -555,6 +559,7 @@ class SalesItemByCustomerAPITestCase(TestCase):
         self.assertEqual(item["customer_name"], self.customer.name)
         self.assertEqual(item["printing_job_id"], self.printing_job.id)
         self.assertEqual(item["printing_order_id"], self.printing_order.id)
+        self.assertEqual(item["external_order_id"], "EXT-CUST-001")
         self.assertEqual(item["position"], "A1-01")
 
     def test_get_sales_items_by_customer_include_shipped_and_paginate(self):
@@ -571,6 +576,45 @@ class SalesItemByCustomerAPITestCase(TestCase):
         result_ids = [item["id"] for item in data["results"]]
         self.assertEqual(result_ids, [self.sales_item2.id, self.sales_item_shipped.id])
 
+    def test_get_sales_items_by_customer_supports_external_order_id_filter(self):
+        other_printing_order = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric="其它面料",
+            width="160cm",
+            process=self.process,
+            created_by=self.user,
+            external_order_id="EXT-CUST-OTHER",
+        )
+        other_printing_job = printing_models.PrintingJob.objects.create(
+            merchant=self.merchant,
+            printing_order=other_printing_order,
+            product=self.product,
+            quantity=50,
+            unit="米",
+            created_by=self.user,
+        )
+        other_sales_item = shipment_models.SalesItem.objects.create(
+            merchant=self.merchant,
+            name="其它外部订单销售品",
+            quantity=Decimal("66.00"),
+            unit=shipment_models.UnitChoices.METER,
+            printing_job_id=other_printing_job.id,
+            customer_id=self.customer.id,
+            created_by=self.user,
+        )
+
+        resp = self.client.get(
+            f"/api/v1/shipment/sales-items/by-customer/{self.customer.id}/"
+            "?external_order_id=EXT-CUST-001"
+        )
+
+        self.assertEqual(resp.status_code, status.HTTP_200_OK)
+        data = resp.json()
+        result_ids = [item["id"] for item in data["results"]]
+        self.assertEqual(set(result_ids), {self.sales_item1.id, self.sales_item2.id})
+        self.assertNotIn(other_sales_item.id, result_ids)
+
     def test_get_sales_items_by_customer_not_found(self):
         resp = self.client.get("/api/v1/shipment/sales-items/by-customer/99999/")
 
@@ -584,6 +628,112 @@ class SalesItemByCustomerAPITestCase(TestCase):
         self.assertEqual(resp.status_code, status.HTTP_404_NOT_FOUND)
 
 
+class SalesItemDetailAPITestCase(APITestCase):
+    """销售品详情 API 测试"""
+
+    def setUp(self):
+        self.merchant = basic_models.Merchant.objects.create(
+            name="详情测试商户", type=basic_models.MerchantTypeEnum.FACTORY
+        )
+        self.other_merchant = basic_models.Merchant.objects.create(
+            name="其它详情测试商户", type=basic_models.MerchantTypeEnum.FACTORY
+        )
+
+        self.user = User.objects.create_user(
+            username="sales_item_detail_user",
+            password="testpass123",
+            email="sales_item_detail@example.com",
+        )
+        self.employee = basic_models.Employee.objects.create(
+            sys_user=self.user,
+            merchant=self.merchant,
+            name="详情测试员工",
+            mobile="13800138031",
+            status=basic_models.EmployeeStatusEnum.ACTIVE,
+        )
+
+        self.other_user = User.objects.create_user(
+            username="sales_item_detail_other_user",
+            password="testpass123",
+            email="sales_item_detail_other@example.com",
+        )
+        self.other_employee = basic_models.Employee.objects.create(
+            sys_user=self.other_user,
+            merchant=self.other_merchant,
+            name="其它详情测试员工",
+            mobile="13800138032",
+            status=basic_models.EmployeeStatusEnum.ACTIVE,
+        )
+
+        self.customer = basic_models.Customer.objects.create(
+            merchant=self.merchant,
+            name="详情测试客户",
+            mobile="13900139033",
+            area="杭州",
+        )
+        self.category = basic_models.ProductCategory.objects.create(
+            merchant=self.merchant,
+            name="详情分类",
+        )
+        self.product = basic_models.Product.objects.create(
+            merchant=self.merchant,
+            category=self.category,
+            name="详情产品",
+            human_id="DETAIL001",
+            mdy_image_url="https://example.com/product-image.jpg",
+        )
+        self.state = stateflow_models.State.objects.create(name="详情状态")
+        self.process = stateflow_models.Process.objects.create(name="详情流程")
+        self.process.replace_nodes([self.state])
+        self.printing_order = printing_models.PrintingOrder.objects.create(
+            merchant=self.merchant,
+            customer=self.customer,
+            fabric="详情面料",
+            width="150cm",
+            process=self.process,
+            created_by=self.user,
+            external_order_id="EXT-DETAIL-001",
+        )
+        self.printing_job = printing_models.PrintingJob.objects.create(
+            merchant=self.merchant,
+            printing_order=self.printing_order,
+            product=self.product,
+            quantity=20,
+            unit="米",
+            created_by=self.user,
+        )
+        self.sales_item = shipment_models.SalesItem.objects.create(
+            merchant=self.merchant,
+            name="详情销售品",
+            quantity=Decimal("88.00"),
+            unit=shipment_models.UnitChoices.METER,
+            printing_job_id=self.printing_job.id,
+            customer_id=self.customer.id,
+            position="B2-03",
+            created_by=self.user,
+        )
+
+        self.client.force_authenticate(user=self.user)
+
+    def test_get_sales_item_detail_success(self):
+        resp = self.client.get(f"/api/v1/shipment/sales-items/{self.sales_item.id}/")
+
+        self.assertEqual(resp.status_code, status.HTTP_200_OK)
+        data = resp.json()
+        self.assertEqual(data["id"], self.sales_item.id)
+        self.assertEqual(data["printing_order_id"], self.printing_order.id)
+        self.assertEqual(data["external_order_id"], "EXT-DETAIL-001")
+        self.assertEqual(data["customer_name"], self.customer.name)
+        self.assertEqual(data["product_image_url"], "https://example.com/product-image.jpg")
+
+    def test_get_sales_item_detail_other_merchant_404(self):
+        self.client.force_authenticate(user=self.other_user)
+
+        resp = self.client.get(f"/api/v1/shipment/sales-items/{self.sales_item.id}/")
+
+        self.assertEqual(resp.status_code, status.HTTP_404_NOT_FOUND)
+
+
 class ShipmentCreateAPITestCase(TestCase):
     """测试创建出货单 API"""
 
diff --git a/api_v1/views/shipment/views.py b/api_v1/views/shipment/views.py
index 8bb0365..01a257b 100644
--- a/api_v1/views/shipment/views.py
+++ b/api_v1/views/shipment/views.py
@@ -13,6 +13,7 @@ from flower.viewsets import LimitedLimitOffsetPagination
 from shipment.models import Shipment
 
 from .serializers import (
+    SalesItemDetailSerializer,
     SalesItemSerializer,
     ShipmentSerializer,
     ShipmentCreateNormalSerializer,
@@ -35,18 +36,39 @@ def _build_sales_item_serializer_context(items):
         )
 
     printing_order_map = {}
+    external_order_id_map = {}
+    product_image_map = {}
     if printing_job_ids:
         from printing.models import PrintingJob
 
-        printing_order_map = dict(
-            PrintingJob.objects.filter(id__in=printing_job_ids).values_list(
-                "id", "printing_order_id"
-            )
+        printing_jobs = list(
+            PrintingJob.objects.filter(id__in=printing_job_ids)
+            .select_related("printing_order", "product")
         )
+        printing_order_map = {
+            job.id: job.printing_order_id for job in printing_jobs
+        }
+        external_order_id_map = {
+            job.id: getattr(job.printing_order, "external_order_id", None)
+            for job in printing_jobs
+        }
+        for job in printing_jobs:
+            if not getattr(job, "product", None):
+                product_image_map[job.id] = None
+                continue
+            primary_url = job.product.get_primary_image_url()
+            if primary_url:
+                product_image_map[job.id] = primary_url
+            elif job.product.image:
+                product_image_map[job.id] = job.product.image.url
+            else:
+                product_image_map[job.id] = None
 
     return {
         "customer_name_map": customer_name_map,
         "printing_order_map": printing_order_map,
+        "external_order_id_map": external_order_id_map,
+        "product_image_map": product_image_map,
     }
 
 
@@ -444,6 +466,7 @@ class SalesItemByCustomerView(GenericAPIView):
             request.query_params.get("include_already_has_shipment", "false").lower()
             == "true"
         )
+        external_order_id = (request.query_params.get("external_order_id") or "").strip()
 
         from shipment.services import get_sales_items_by_customer
 
@@ -451,6 +474,7 @@ class SalesItemByCustomerView(GenericAPIView):
             merchant=customer.merchant,
             customer_id=customer.id,
             include_already_has_shipment=include_already_has_shipment,
+            external_order_id=external_order_id or None,
         )
         page = self.paginate_queryset(queryset)
         items = list(page) if page is not None else list(queryset)
@@ -529,5 +553,48 @@ class SalesItemCreateView(APIView):
             return Response({"detail": str(e)}, status=status.HTTP_400_BAD_REQUEST)
 
         # 返回创建的销售品
-        response_serializer = SalesItemSerializer(sales_item)
+        response_serializer = SalesItemSerializer(
+            sales_item,
+            context=_build_sales_item_serializer_context([sales_item]),
+        )
         return Response(response_serializer.data, status=status.HTTP_201_CREATED)
+
+
+class SalesItemDetailView(GenericAPIView):
+    """
+    销售品详情。
+
+    GET /api/v1/shipment/sales-items/<id>/
+    """
+
+    permission_classes = [IsAuthenticated]
+    serializer_class = SalesItemDetailSerializer
+
+    def get_queryset(self):
+        from shipment.models import SalesItem
+
+        qs = SalesItem.objects.select_related("shipment", "created_by").order_by("id")
+
+        user = self.request.user
+        if getattr(user, "is_superuser", False):
+            return qs
+
+        emp = getattr(user, "employee", None)
+        merchant = getattr(emp, "merchant", None) if emp else None
+        if not merchant:
+            return SalesItem.objects.none()
+        return qs.filter(merchant=merchant)
+
+    def get(self, request, pk: int):
+        sales_item = self.get_queryset().filter(id=pk).first()
+        if sales_item is None:
+            return Response({"detail": "Not found."}, status=status.HTTP_404_NOT_FOUND)
+
+        serializer = self.get_serializer(
+            sales_item,
+            context={
+                **_build_sales_item_serializer_context([sales_item]),
+                "request": request,
+            },
+        )
+        return Response(serializer.data)
diff --git a/docs/external_product_image_backfill.md b/docs/external_product_image_backfill.md
new file mode 100644
index 0000000..3c4f0b7
--- /dev/null
+++ b/docs/external_product_image_backfill.md
@@ -0,0 +1,147 @@
+# 外部订单产品补图
+
+本文档说明“外部印染订单产品补图”的手动命令、共享逻辑与定时任务配置。
+
+## 背景
+
+系统中有一类 `PrintingJob` 来自外部印染订单，同步后：
+
+- `printing_order.external_order_id` 有值
+- `product.image` 为空
+- `job.external_raw.YanSe` 或 `job.external_product_name` 中包含可用于外部图片接口查询的名称
+
+为了让产品图片逐步补齐，项目提供：
+
+1. 手动 management command
+2. 可复用的共享函数
+3. 每小时一次的 Celery 定时任务
+
+## 处理规则
+
+补图任务只处理满足以下条件的数据：
+
+1. `printing_order.external_order_id` 非空
+2. `product.image` 为空
+3. 能从以下字段提取请求名：
+   - 优先：`external_raw.YanSe`
+   - 回退：`external_product_name`
+
+并且同一个 `product` 在单次运行中只会处理一次，避免重复请求外部图片接口。
+
+## 共享逻辑
+
+共享逻辑已抽到：
+
+- [api_v1/external_product_image_backfill.py](/home/f/coding/flower/api_v1/external_product_image_backfill.py)
+
+其中：
+
+- `extract_request_name(job)`
+- `run_external_product_image_backfill(...)`
+
+management command 与 Celery task 都复用这套逻辑，避免出现双份实现。
+
+## 手动运行
+
+命令位置：
+
+- [api_v1/management/commands/backfill_external_product_images.py](/home/f/coding/flower/api_v1/management/commands/backfill_external_product_images.py)
+
+### 示例
+
+处理指定商户：
+
+```bash
+python manage.py backfill_external_product_images --merchant-id 1
+```
+
+限制本次最多处理 50 条：
+
+```bash
+python manage.py backfill_external_product_images --merchant-id 1 --limit 50
+```
+
+只预览、不实际写库：
+
+```bash
+python manage.py backfill_external_product_images --merchant-id 1 --dry-run
+```
+
+仅处理指定产品：
+
+```bash
+python manage.py backfill_external_product_images --product-id 123
+```
+
+### 参数
+
+| 参数 | 说明 |
+|------|------|
+| `--merchant-id` | 仅处理指定商户的产品 |
+| `--product-id` | 仅处理指定产品 |
+| `--limit` | 最多处理多少条符合条件的产品 |
+| `--dry-run` | 仅输出将处理的产品，不实际请求外部 API 或写库 |
+
+## Celery Task
+
+Task 位置：
+
+- [api_v1/tasks.py](/home/f/coding/flower/api_v1/tasks.py)
+
+Task 名称：
+
+- `api_v1.tasks.backfill_external_product_images`
+
+支持参数：
+
+- `merchant_id`
+- `product_id`
+- `limit`
+- `dry_run`
+
+默认建议：
+
+- `limit=500`
+- `dry_run=False`
+
+## 定时任务
+
+已接入 `CELERY_BEAT_SCHEDULE`：
+
+- key: `backfill_external_product_images_hourly`
+- schedule: `crontab(minute=17)`
+- kwargs:
+  - `limit=500`
+  - `dry_run=False`
+
+也就是说：
+
+- 每小时第 `17` 分钟运行一次
+- 采用错峰策略，避免和若干整点/五分钟任务撞在一起
+
+配置位置：
+
+- [flower/settings.py](/home/f/coding/flower/flower/settings.py)
+
+## 输出与结果
+
+无论是 command 还是 task，最终都会产出统一统计结果，包含：
+
+- `scanned`
+- `selected`
+- `success`
+- `failed`
+- `skipped_with_image`
+- `skipped_without_request_name`
+- `skipped_duplicate_product`
+
+Celery task 还会额外带：
+
+- `task_id`
+
+## 风险与建议
+
+1. 这是外部接口依赖任务，若外部图片接口不稳定，`failed` 可能升高
+2. 每小时一次已足够，`limit=500` 对“补漏”场景比较合适
+3. 如果后续发现积压较多，可以只调大 `limit`，不必提高调度频率
+4. 若未来需要追踪失败明细，可考虑像外部印染同步那样补失败落库；当前版本仅记录日志
diff --git a/flower/settings.py b/flower/settings.py
index b3e92c3..867d245 100644
--- a/flower/settings.py
+++ b/flower/settings.py
@@ -593,6 +593,14 @@ CELERY_BEAT_SCHEDULE = {
             'limit': 100,
         },
     },
+    'backfill_external_product_images_hourly': {
+        'task': 'api_v1.tasks.backfill_external_product_images',
+        'schedule': crontab(minute=17),
+        'kwargs': {
+            'limit': 500,
+            'dry_run': False,
+        },
+    },
     # 明道云开版：同步到“暂存表”
     # - 仅在 02:00-08:00 时间窗内持续运行（每 N 分钟触发一次）
     # - 通过 request_interval_seconds 控制单次任务对明道云 API 的请求节奏，避免超 QPS
diff --git a/printing/management/commands/generate_fake_shipment_data.py b/printing/management/commands/generate_fake_shipment_data.py
new file mode 100644
index 0000000..04cc1de
--- /dev/null
+++ b/printing/management/commands/generate_fake_shipment_data.py
@@ -0,0 +1,468 @@
+import random
+from decimal import Decimal
+
+from django.conf import settings
+from django.contrib.auth import get_user_model
+from django.core.management.base import BaseCommand, CommandError
+from django.db import transaction
+
+from basic_info import models as basic_models
+from printing import models as printing_models
+from shipment import models as shipment_models
+
+
+class Command(BaseCommand):
+    help = (
+        "为开发环境生成一批假的 customer / printing_order / printing_job / sales_item 数据，"
+        "用于前端联调 shipment 与 printing 相关页面。"
+    )
+
+    def add_arguments(self, parser):
+        parser.add_argument("--merchant-id", type=int, default=1, help="目标商户 ID，默认 1")
+        parser.add_argument("--user-id", type=int, default=None, help="创建人用户 ID，可选")
+        parser.add_argument("--customers", type=int, default=10, help="客户数量，默认 10")
+        parser.add_argument("--orders", type=int, default=50, help="订单数量，默认 50")
+        parser.add_argument(
+            "--jobs-min", type=int, default=3, help="每个订单最少生成多少个 PrintingJob，默认 3"
+        )
+        parser.add_argument(
+            "--jobs-max", type=int, default=30, help="每个订单最多生成多少个 PrintingJob，默认 30"
+        )
+        parser.add_argument(
+            "--items-min", type=int, default=2, help="每个 job 最少生成多少个 SalesItem，默认 2"
+        )
+        parser.add_argument(
+            "--items-max", type=int, default=20, help="每个 job 最多生成多少个 SalesItem，默认 20"
+        )
+        parser.add_argument(
+            "--products", type=int, default=24, help="测试产品数量，默认 24"
+        )
+        parser.add_argument(
+            "--tag",
+            type=str,
+            default="DEVSHIP",
+            help="生成数据的标签前缀，默认 DEVSHIP",
+        )
+        parser.add_argument(
+            "--seed",
+            type=int,
+            default=20260331,
+            help="随机种子，默认 20260331",
+        )
+        parser.add_argument(
+            "--yes",
+            action="store_true",
+            help="跳过交互确认，直接执行（谨慎使用）",
+        )
+        parser.add_argument(
+            "--dry-run",
+            action="store_true",
+            help="仅输出执行前检查与预计写入量，不实际写入数据",
+        )
+
+    def handle(self, *args, **options):
+        random.seed(options["seed"])
+        self._validate_options(options)
+
+        merchant = basic_models.Merchant.objects.filter(id=options["merchant_id"]).first()
+        if merchant is None:
+            raise CommandError(f"merchant_id={options['merchant_id']} 不存在")
+
+        created_by = self._resolve_user(merchant=merchant, user_id=options["user_id"])
+        preview = self._collect_preview(merchant=merchant, created_by=created_by, options=options)
+
+        self._print_preview(preview)
+
+        if options["dry_run"]:
+            self.stdout.write(self.style.WARNING("dry-run 模式：未写入任何数据"))
+            return
+
+        if not options["yes"]:
+            self._confirm_or_abort()
+
+        with transaction.atomic():
+            counts = self._generate_data(
+                merchant=merchant,
+                created_by=created_by,
+                options=options,
+            )
+
+        self._print_summary(
+            merchant=merchant,
+            created_by=created_by,
+            tag=options["tag"],
+            counts=counts,
+        )
+
+    def _generate_data(self, *, merchant, created_by, options):
+        category = self._ensure_category(merchant=merchant, tag=options["tag"])
+        products = self._ensure_products(
+            merchant=merchant,
+            category=category,
+            count=options["products"],
+            tag=options["tag"],
+        )
+        customers = self._create_customers(
+            merchant=merchant,
+            count=options["customers"],
+            tag=options["tag"],
+        )
+
+        order_count = 0
+        job_count = 0
+        sales_item_count = 0
+
+        self.stdout.write(self.style.NOTICE("开始生成测试数据..."))
+        self.stdout.write("步骤 1/3: 准备客户与产品")
+        self.stdout.write(f"  客户数: {len(customers)}")
+        self.stdout.write(f"  产品数: {len(products)}")
+        self.stdout.write("步骤 2/3: 创建 PrintingOrder / PrintingJob / SalesItem")
+
+        for index in range(1, options["orders"] + 1):
+            customer = customers[(index - 1) % len(customers)]
+            order = printing_models.PrintingOrder.objects.create(
+                merchant=merchant,
+                customer=customer,
+                fabric=random.choice(["全棉", "涤纶", "尼龙", "人棉", "TC"]),
+                width=random.choice(["150cm", "160cm", "170cm", "180cm"]),
+                is_urgent=random.choice([False, False, False, True]),
+                area=customer.area or random.choice(["广州", "佛山", "绍兴", "杭州"]),
+                address=f"{customer.area or '广州'}-{index}号测试地址",
+                fabric_source=random.choice(["自带布", "仓库", "客户送布"]),
+                is_fabric_received=random.choice([True, False]),
+                craft=random.choice(["活性印花", "数码印花", "涂料印花"]),
+                description=f"{options['tag']} 测试印染订单 #{index}",
+                position=random.choice(["A区", "B区", "C区", "待排产"]),
+                printing_warn=random.choice(["", "注意色差", "先确认花型"]),
+                rolling_warn=random.choice(["", "注意卷边", "慢速滚筒"]),
+                production_warn=random.choice(["", "先打样", "优先安排"]),
+                created_by=created_by,
+                external_order_id=self._build_external_order_id(index=index),
+                external_customer_id=f"CUST-{customer.id}",
+                external_customer_name=customer.name,
+                external_employee_name=self._display_user(created_by),
+            )
+            order_count += 1
+
+            jobs_for_order = random.randint(options["jobs_min"], options["jobs_max"])
+            for job_index in range(1, jobs_for_order + 1):
+                product = random.choice(products)
+                job = printing_models.PrintingJob.objects.create(
+                    merchant=merchant,
+                    printing_order=order,
+                    product=product,
+                    work_state=random.choice(
+                        [
+                            printing_models.PrintingJobWorkStateEnum.PRODUCING,
+                            printing_models.PrintingJobWorkStateEnum.WAITING_FOR_DELIVERY,
+                            printing_models.PrintingJobWorkStateEnum.WAITING_FOR_INVOICE,
+                        ]
+                    ),
+                    quantity=random.randint(80, 3000),
+                    unit=random.choice(["米", "码", "件"]),
+                    size=random.choice(["", "120x120", "150x150", "200x200"]) or None,
+                    pieces=random.choice([None, 1, 2, 4, 6, 8]),
+                    description=f"{options['tag']} Job {index}-{job_index}",
+                    created_by=created_by,
+                    external_product_name=product.name,
+                )
+                job_count += 1
+
+                sales_items = []
+                items_for_job = random.randint(options["items_min"], options["items_max"])
+                for item_index in range(1, items_for_job + 1):
+                    sales_items.append(
+                        shipment_models.SalesItem(
+                            shipment=None,
+                            merchant=merchant,
+                            name=f"{product.name}-销售品-{index}-{job_index}-{item_index}",
+                            quantity=Decimal(
+                                f"{random.randint(20, 3000)}.{random.randint(0, 99):02d}"
+                            ),
+                            unit=random.choice(
+                                [
+                                    shipment_models.UnitChoices.METER,
+                                    shipment_models.UnitChoices.PIECE,
+                                    shipment_models.UnitChoices.YARD,
+                                    shipment_models.UnitChoices.UNIT,
+                                ]
+                            ),
+                            created_by=created_by,
+                            printing_job_id=job.id,
+                            customer_id=customer.id,
+                            position=random.choice(
+                                [
+                                    "A1-01",
+                                    "A1-02",
+                                    "B2-03",
+                                    "C3-05",
+                                    "待分区",
+                                    "待发货区",
+                                ]
+                            ),
+                            remark=random.choice(["", "测试数据", "扫码联调用", "优先出货"]),
+                        )
+                    )
+                shipment_models.SalesItem.objects.bulk_create(sales_items, batch_size=500)
+                sales_item_count += len(sales_items)
+
+            if index % 10 == 0 or index == options["orders"]:
+                self.stdout.write(
+                    f"  已完成订单 {index}/{options['orders']}，"
+                    f"累计 jobs={job_count}，sales_items={sales_item_count}"
+                )
+
+        self.stdout.write("步骤 3/3: 数据写入完成")
+        return {
+            "customers_created": len(customers),
+            "printing_orders_created": order_count,
+            "printing_jobs_created": job_count,
+            "sales_items_created": sales_item_count,
+        }
+
+    def _resolve_user(self, *, merchant, user_id):
+        User = get_user_model()
+        if user_id is not None:
+            user = User.objects.filter(id=user_id).first()
+            if user is None:
+                raise CommandError(f"user_id={user_id} 不存在")
+            employee = getattr(user, "employee", None)
+            if employee is None or employee.merchant_id != merchant.id:
+                raise CommandError("指定 user 未绑定到目标商户的 employee")
+            return user
+
+        employee = (
+            basic_models.Employee.objects.select_related("sys_user")
+            .filter(merchant=merchant, sys_user__isnull=False)
+            .order_by("id")
+            .first()
+        )
+        if employee and employee.sys_user:
+            return employee.sys_user
+
+        username = f"seed_{merchant.id}_user"
+        user = User.objects.create_user(username=username, password="devpass123")
+        basic_models.Employee.objects.create(
+            merchant=merchant,
+            sys_user=user,
+            name=f"Seed User {merchant.id}",
+            mobile=f"1390000{merchant.id:04d}",
+            status=basic_models.EmployeeStatusEnum.ACTIVE,
+        )
+        return user
+
+    def _ensure_category(self, *, merchant, tag):
+        category, _ = basic_models.ProductCategory.objects.get_or_create(
+            merchant=merchant,
+            name=f"{tag}-测试分类",
+            defaults={"product_prefix": "TS"},
+        )
+        return category
+
+    def _ensure_products(self, *, merchant, category, count, tag):
+        products = list(
+            basic_models.Product.objects.filter(
+                merchant=merchant,
+                category=category,
+                name__startswith=f"{tag}-测试产品-",
+            ).order_by("id")
+        )
+        missing = count - len(products)
+        for index in range(1, missing + 1):
+            number = len(products) + index
+            products.append(
+                basic_models.Product.objects.create(
+                    merchant=merchant,
+                    category=category,
+                    name=f"{tag}-测试产品-{number:03d}",
+                    human_id=f"{tag[:4]}P{number:03d}",
+                    unit=random.choice(
+                        [
+                            basic_models.ProductUnitEnum.METER,
+                            basic_models.ProductUnitEnum.YARD,
+                            basic_models.ProductUnitEnum.SEGMENT,
+                        ]
+                    ),
+                    color=random.choice(["红", "蓝", "黑", "白", "灰"]),
+                    width_size=Decimal(random.choice(["150.00", "160.00", "170.00"])),
+                    description="开发环境自动生成的测试产品",
+                    from_mdy=False,
+                )
+            )
+        return list(
+            basic_models.Product.objects.filter(
+                merchant=merchant,
+                category=category,
+                name__startswith=f"{tag}-测试产品-",
+            ).order_by("id")[:count]
+        )
+
+    def _create_customers(self, *, merchant, count, tag):
+        customers = []
+        employee = (
+            basic_models.Employee.objects.filter(merchant=merchant).order_by("id").first()
+        )
+        if employee is None:
+            raise CommandError("目标商户下没有 employee，无法创建 customer")
+
+        for index in range(1, count + 1):
+            name = f"{tag}-测试客户-{index:02d}"
+            customer, _ = basic_models.Customer.objects.get_or_create(
+                merchant=merchant,
+                name=name,
+                defaults={
+                    "created_by": employee,
+                    "mobile": f"138{merchant.id:02d}{index:06d}"[:11],
+                    "area": random.choice(["广州", "佛山", "绍兴", "杭州", "苏州"]),
+                    "contact": f"联系人{index:02d}",
+                    "description": "开发环境自动生成的测试客户",
+                },
+            )
+            customers.append(customer)
+        return customers
+
+    def _build_external_order_id(self, *, index):
+        return f"KD{20135142 + index:08d}"
+
+    def _validate_options(self, options):
+        if options["customers"] <= 0:
+            raise CommandError("--customers 必须大于 0")
+        if options["orders"] <= 0:
+            raise CommandError("--orders 必须大于 0")
+        if options["products"] <= 0:
+            raise CommandError("--products 必须大于 0")
+        if options["jobs_min"] <= 0 or options["jobs_max"] <= 0:
+            raise CommandError("--jobs-min / --jobs-max 必须大于 0")
+        if options["items_min"] <= 0 or options["items_max"] <= 0:
+            raise CommandError("--items-min / --items-max 必须大于 0")
+        if options["jobs_min"] > options["jobs_max"]:
+            raise CommandError("--jobs-min 不能大于 --jobs-max")
+        if options["items_min"] > options["items_max"]:
+            raise CommandError("--items-min 不能大于 --items-max")
+
+    def _collect_preview(self, *, merchant, created_by, options):
+        db = settings.DATABASES["default"]
+        tag = options["tag"]
+
+        existing_customer_count = basic_models.Customer.objects.filter(
+            merchant=merchant,
+            name__startswith=f"{tag}-测试客户-",
+        ).count()
+        existing_order_count = printing_models.PrintingOrder.objects.filter(
+            merchant=merchant,
+            description__startswith=f"{tag} 测试印染订单 #",
+        ).count()
+        existing_job_count = printing_models.PrintingJob.objects.filter(
+            merchant=merchant,
+            description__startswith=f"{tag} Job ",
+        ).count()
+        existing_sales_item_count = shipment_models.SalesItem.objects.filter(
+            merchant=merchant,
+            name__startswith=f"{tag}-测试产品-",
+        ).count()
+
+        jobs_min_total = options["orders"] * options["jobs_min"]
+        jobs_max_total = options["orders"] * options["jobs_max"]
+        sales_items_min_total = jobs_min_total * options["items_min"]
+        sales_items_max_total = jobs_max_total * options["items_max"]
+
+        return {
+            "debug": getattr(settings, "DEBUG", None),
+            "db_host": db.get("HOST"),
+            "db_port": db.get("PORT"),
+            "db_name": db.get("NAME"),
+            "merchant_id": merchant.id,
+            "merchant_name": merchant.name,
+            "created_by_id": created_by.id,
+            "created_by_username": created_by.username,
+            "tag": tag,
+            "seed": options["seed"],
+            "customers": options["customers"],
+            "orders": options["orders"],
+            "jobs_min": options["jobs_min"],
+            "jobs_max": options["jobs_max"],
+            "items_min": options["items_min"],
+            "items_max": options["items_max"],
+            "products": options["products"],
+            "existing_customer_count": existing_customer_count,
+            "existing_order_count": existing_order_count,
+            "existing_job_count": existing_job_count,
+            "existing_sales_item_count": existing_sales_item_count,
+            "jobs_min_total": jobs_min_total,
+            "jobs_max_total": jobs_max_total,
+            "sales_items_min_total": sales_items_min_total,
+            "sales_items_max_total": sales_items_max_total,
+        }
+
+    def _print_preview(self, preview):
+        self.stdout.write(self.style.WARNING("即将生成开发环境测试数据，请先确认以下状态"))
+        self.stdout.write("=" * 72)
+        self.stdout.write(f"DEBUG               : {preview['debug']}")
+        self.stdout.write(
+            f"数据库              : {preview['db_name']} @ {preview['db_host']}:{preview['db_port']}"
+        )
+        self.stdout.write(
+            f"目标商户            : {preview['merchant_id']} / {preview['merchant_name']}"
+        )
+        self.stdout.write(
+            f"创建人用户          : {preview['created_by_id']} / {preview['created_by_username']}"
+        )
+        self.stdout.write(f"数据标签            : {preview['tag']}")
+        self.stdout.write(f"随机种子            : {preview['seed']}")
+        self.stdout.write("-" * 72)
+        self.stdout.write(f"客户数              : {preview['customers']}")
+        self.stdout.write(f"订单数              : {preview['orders']}")
+        self.stdout.write(
+            f"每单 job 数         : {preview['jobs_min']} ~ {preview['jobs_max']}"
+        )
+        self.stdout.write(
+            f"每 job sales item 数: {preview['items_min']} ~ {preview['items_max']}"
+        )
+        self.stdout.write(f"测试产品数          : {preview['products']}")
+        self.stdout.write("-" * 72)
+        self.stdout.write(
+            f"预计新增 PrintingJob: {preview['jobs_min_total']} ~ {preview['jobs_max_total']}"
+        )
+        self.stdout.write(
+            "预计新增 SalesItem  : "
+            f"{preview['sales_items_min_total']} ~ {preview['sales_items_max_total']}"
+        )
+        self.stdout.write("-" * 72)
+        self.stdout.write(
+            f"当前同 tag 客户数    : {preview['existing_customer_count']}"
+        )
+        self.stdout.write(
+            f"当前同 tag 订单数    : {preview['existing_order_count']}"
+        )
+        self.stdout.write(
+            f"当前同 tag job 数    : {preview['existing_job_count']}"
+        )
+        self.stdout.write(
+            f"当前同 tag sales item: {preview['existing_sales_item_count']}"
+        )
+        self.stdout.write("=" * 72)
+
+    def _confirm_or_abort(self):
+        answer = input("确认要继续写入这批测试数据吗？请输入 YES 继续: ").strip()
+        if answer != "YES":
+            raise CommandError("已取消执行，未写入任何数据")
+
+    def _print_summary(self, *, merchant, created_by, tag, counts):
+        self.stdout.write(self.style.SUCCESS("本次执行摘要"))
+        self.stdout.write("=" * 72)
+        self.stdout.write(f"merchant_id         : {merchant.id}")
+        self.stdout.write(f"merchant_name       : {merchant.name}")
+        self.stdout.write(f"created_by          : {created_by.id}:{created_by.username}")
+        self.stdout.write(f"tag                 : {tag}")
+        self.stdout.write(f"customers_created   : {counts['customers_created']}")
+        self.stdout.write(f"printing_orders     : {counts['printing_orders_created']}")
+        self.stdout.write(f"printing_jobs       : {counts['printing_jobs_created']}")
+        self.stdout.write(f"sales_items         : {counts['sales_items_created']}")
+        self.stdout.write("=" * 72)
+        self.stdout.write(self.style.SUCCESS("假数据生成完成"))
+
+    def _display_user(self, user):
+        employee = getattr(user, "employee", None)
+        if employee:
+            return employee.name
+        return user.username
diff --git a/shipment/services.py b/shipment/services.py
index fc69dde..781a2f6 100644
--- a/shipment/services.py
+++ b/shipment/services.py
@@ -83,6 +83,7 @@ def get_sales_items_by_customer(
     merchant,
     customer_id: int,
     include_already_has_shipment: bool = False,
+    external_order_id: str | None = None,
 ) -> QuerySet[SalesItem]:
     """
     通过客户ID查询对应销售品。
@@ -94,6 +95,15 @@ def get_sales_items_by_customer(
         customer_id=customer_id,
     )
 
+    if external_order_id:
+        from printing.models import PrintingJob
+
+        printing_job_ids = PrintingJob.objects.filter(
+            merchant=merchant,
+            printing_order__external_order_id=external_order_id,
+        ).values_list("id", flat=True)
+        queryset = queryset.filter(printing_job_id__in=list(printing_job_ids))
+
     if not include_already_has_shipment:
         queryset = queryset.filter(shipment__isnull=True)