diff --git a/furniture-3d-system/src/server/services/__tests__/product-archive-source-image.service.test.ts b/furniture-3d-system/src/server/services/__tests__/product-archive-source-image.service.test.ts
index 5ac3d89b..5092af67 100644
--- a/furniture-3d-system/src/server/services/__tests__/product-archive-source-image.service.test.ts
+++ b/furniture-3d-system/src/server/services/__tests__/product-archive-source-image.service.test.ts
@@ -71,6 +71,66 @@ describe('product archive source image service', () => {
     expect(fetchImpl).toHaveBeenCalledTimes(2)
   })
 
+  it('allows the company HTTPS image host on port 3333', async () => {
+    const imageUrl = 'https://static.jiansun.vip:3333/Resource/SkuImg/YMJ000904N754V01.jpg'
+    const fetchImpl = jest.fn().mockResolvedValue(
+      response({ contentType: 'image/jpeg' }),
+    ) as unknown as typeof fetch
+    const service = new ProductArchiveSourceImageService(
+      repository(imageUrl),
+      fetchImpl,
+      jest.fn().mockResolvedValue(['93.184.216.34']),
+    )
+
+    await expect(service.readByBarcode('YMJ000904N722')).resolves.toEqual(
+      expect.objectContaining({ contentType: 'image/jpeg' }),
+    )
+    expect(fetchImpl).toHaveBeenCalledWith(new URL(imageUrl), expect.anything())
+  })
+
+  it.each([
+    'https://images.example.com:3333/product.jpg',
+    'https://static.jiansun.vip.example.com:3333/product.jpg',
+    'https://static.jiansun.vip:8443/product.jpg',
+    'http://static.jiansun.vip:3333/product.jpg',
+  ])('keeps untrusted image ports blocked: %s', async (imageUrl) => {
+    const fetchImpl = jest.fn() as unknown as typeof fetch
+    const service = new ProductArchiveSourceImageService(
+      repository(imageUrl),
+      fetchImpl,
+      jest.fn().mockResolvedValue(['93.184.216.34']),
+    )
+
+    await expect(service.readByBarcode('BARCODE-1')).rejects.toThrow('port is not allowed')
+    expect(fetchImpl).not.toHaveBeenCalled()
+  })
+
+  it('keeps private addresses blocked for the trusted image host', async () => {
+    const fetchImpl = jest.fn() as unknown as typeof fetch
+    const service = new ProductArchiveSourceImageService(
+      repository('https://static.jiansun.vip:3333/product.jpg'),
+      fetchImpl,
+      jest.fn().mockResolvedValue(['127.0.0.1']),
+    )
+
+    await expect(service.readByBarcode('BARCODE-1')).rejects.toThrow('private address')
+    expect(fetchImpl).not.toHaveBeenCalled()
+  })
+
+  it('validates redirects from the trusted host before following them', async () => {
+    const fetchImpl = jest.fn().mockResolvedValue(
+      response({ status: 302, location: 'https://images.example.com:3333/product.jpg' }),
+    ) as unknown as typeof fetch
+    const service = new ProductArchiveSourceImageService(
+      repository('https://static.jiansun.vip:3333/product.jpg'),
+      fetchImpl,
+      jest.fn().mockResolvedValue(['93.184.216.34']),
+    )
+
+    await expect(service.readByBarcode('BARCODE-1')).rejects.toThrow('port is not allowed')
+    expect(fetchImpl).toHaveBeenCalledTimes(1)
+  })
+
   it('blocks source URLs that resolve to a private address', async () => {
     const sourceRepository = repository('http://internal.example.com/product.jpg')
     const fetchImpl = jest.fn() as unknown as typeof fetch
diff --git a/furniture-3d-system/src/server/services/product-archive-source-image.service.ts b/furniture-3d-system/src/server/services/product-archive-source-image.service.ts
index 231d21ea..0b90cea9 100644
--- a/furniture-3d-system/src/server/services/product-archive-source-image.service.ts
+++ b/furniture-3d-system/src/server/services/product-archive-source-image.service.ts
@@ -83,9 +83,15 @@ function isPrivateAddress(address: string) {
 async function assertPublicImageUrl(url: URL, resolveAddresses: ResolveAddresses) {
   if (!['http:', 'https:'].includes(url.protocol)) throw new Error('Unsupported image protocol')
   if (url.username || url.password) throw new Error('Image URL credentials are not allowed')
-  if (url.port && !['80', '443'].includes(url.port)) throw new Error('Image URL port is not allowed')
-
   const hostname = url.hostname.trim().toLowerCase()
+  // JST SKU photos also use the company's HTTPS image host on port 3333.
+  const isTrustedImagePort = url.protocol === 'https:'
+    && hostname === 'static.jiansun.vip'
+    && url.port === '3333'
+  if (url.port && !['80', '443'].includes(url.port) && !isTrustedImagePort) {
+    throw new Error('Image URL port is not allowed')
+  }
+
   if (!hostname || hostname === 'localhost' || hostname.endsWith('.local')) {
     throw new Error('Image URL hostname is not public')
   }