diff --git a/furniture-3d-system/src/app/intake/IntakeClient.test.tsx b/furniture-3d-system/src/app/intake/IntakeClient.test.tsx
index 20a1b0b8..80986792 100644
--- a/furniture-3d-system/src/app/intake/IntakeClient.test.tsx
+++ b/furniture-3d-system/src/app/intake/IntakeClient.test.tsx
@@ -3284,7 +3284,7 @@ describe('IntakeClient', () => {
     expect(screen.queryByTestId('embedded-non-integrated-detail')).not.toBeInTheDocument()
   })
 
-  it('opens a separate workspace tab each time product edit is clicked', async () => {
+  it('reuses the existing workspace tab when product edit is clicked again', async () => {
     const actor = userEvent.setup()
 
     replaceNonIntegratedProducts([createNonIntegratedProduct()])
@@ -3296,11 +3296,11 @@ describe('IntakeClient', () => {
     await actor.click(screen.getByRole('button', { name: '修改' }))
 
     expect(screen.getAllByRole('tab', { name: 'DNZ0001产品开发明细' })).toHaveLength(
-      2,
+      1,
     )
   })
 
-  it('opens a copied product tab even when the source product already has the max tabs', async () => {
+  it('opens a copied product tab when the source product page is already open', async () => {
     const actor = userEvent.setup()
     const [sourceBrand, targetBrand] = Object.keys(NON_INTEGRATED_BRAND_PREFIX_MAP)
     const expectedSpu = `${NON_INTEGRATED_BRAND_PREFIX_MAP[targetBrand]}SZ0230`
@@ -3332,7 +3332,7 @@ describe('IntakeClient', () => {
     const beforeCopyTabs = screen.getAllByRole('tab')
     expect(
       beforeCopyTabs.filter((tab) => tab.textContent?.startsWith('SZ0230')),
-    ).toHaveLength(2)
+    ).toHaveLength(1)
 
     const listRow = screen.getByText('SZ0230').closest('tr')
     expect(listRow).not.toBeNull()
@@ -3349,8 +3349,8 @@ describe('IntakeClient', () => {
     })
 
     const tabs = screen.getAllByRole('tab')
-    expect(tabs).toHaveLength(4)
-    expect(tabs.filter((tab) => tab.textContent?.startsWith('SZ0230'))).toHaveLength(2)
+    expect(tabs).toHaveLength(3)
+    expect(tabs.filter((tab) => tab.textContent?.startsWith('SZ0230'))).toHaveLength(1)
     expect(tabs.some((tab) => tab.textContent?.includes(expectedSpu))).toBe(true)
     expect(push).not.toHaveBeenCalled()
   })
diff --git a/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.test.ts b/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.test.ts
index b8986246..bd24d200 100644
--- a/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.test.ts
+++ b/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.test.ts
@@ -28,3 +28,23 @@ describe("work-record workspace tabs", () => {
     expect(result.activeTab).toEqual(existing);
   });
 });
+
+describe("single-page workspace tabs", () => {
+  it("activates the existing tab instead of opening the same page twice", () => {
+    const existing: IntakeWorkspaceTab = {
+      kind: "pendingEntry",
+      id: "pending-entry:nonIntegrated:1",
+      label: "产品开发明细",
+      entryTab: "nonIntegrated",
+    };
+    const incoming: IntakeWorkspaceTab = {
+      ...existing,
+      id: "pending-entry:nonIntegrated:2",
+    };
+
+    const result = resolveWorkspaceTabsForOpen([existing], incoming);
+
+    expect(result.tabs).toEqual([existing]);
+    expect(result.activeTab).toEqual(existing);
+  });
+});
diff --git a/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.ts b/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.ts
index d8b7de0a..463af698 100644
--- a/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.ts
+++ b/furniture-3d-system/src/app/intake/intakeWorkspaceTabUtils.ts
@@ -1,6 +1,6 @@
 import type { IntakeWorkspaceTab } from "@/app/intake/intakeWorkspaceTypes";
 
-const MAX_WORKSPACE_TABS_PER_PAGE = 2;
+const MAX_WORKSPACE_TABS_PER_PAGE = 1;
 
 function readWorkspaceTabSequence(tabId: string) {
   const maybeSequence = Number(tabId.split(":").at(-1));