diff --git a/app/(chat)/ai-cad/page.tsx b/app/(chat)/ai-cad/page.tsx
index 514994dd6..54294f17d 100644
--- a/app/(chat)/ai-cad/page.tsx
+++ b/app/(chat)/ai-cad/page.tsx
@@ -4,7 +4,8 @@ import type { Metadata } from "next";
 import { redirect } from "next/navigation";
 import { auth } from "@/app/(auth)/auth";
 
-const ZOO_MODELING_APP_SRC = "/vendor/zoo-modeling-app/index.html";
+const ZOO_MODELING_APP_SRC =
+  "/vendor/zoo-modeling-app/index.html?v=f2b345db";
 
 export const dynamic = "force-dynamic";
 export const metadata: Metadata = {
diff --git a/scripts/vendor-zoo-modeling-app.mjs b/scripts/vendor-zoo-modeling-app.mjs
index 494b5c55c..544d6c0da 100644
--- a/scripts/vendor-zoo-modeling-app.mjs
+++ b/scripts/vendor-zoo-modeling-app.mjs
@@ -31,6 +31,8 @@ const outputDir = path.join(root, "public/vendor/zoo-modeling-app");
 const customizationDir = path.join(root, "vendor/zoo-modeling-app");
 const proxyToken = "hicad-session";
 const brandedFaviconUrl = "/api/favicon?surface=hicad";
+const enableManufacturingExtension =
+  process.env.HICAD_MANUFACTURING_EXTENSION === "1";
 
 function run(command, args, options = {}) {
   const result = spawnSync(command, args, {
@@ -134,18 +136,20 @@ function patchOfficialSource() {
     path.join(customizationDir, "Logo.tsx"),
     path.join(sourceDir, "src/components/Logo.tsx")
   );
-  copyFileSync(
-    path.join(customizationDir, "manufacturing.ts"),
-    path.join(sourceDir, "src/components/manufacturing.ts")
-  );
-  copyFileSync(
-    path.join(customizationDir, "HicadManufacturingPanel.tsx"),
-    path.join(sourceDir, "src/components/HicadManufacturingPanel.tsx")
-  );
-  copyFileSync(
-    path.join(customizationDir, "HicadManufacturingLauncher.tsx"),
-    path.join(sourceDir, "src/components/HicadManufacturingLauncher.tsx")
-  );
+  if (enableManufacturingExtension) {
+    copyFileSync(
+      path.join(customizationDir, "manufacturing.ts"),
+      path.join(sourceDir, "src/components/manufacturing.ts")
+    );
+    copyFileSync(
+      path.join(customizationDir, "HicadManufacturingPanel.tsx"),
+      path.join(sourceDir, "src/components/HicadManufacturingPanel.tsx")
+    );
+    copyFileSync(
+      path.join(customizationDir, "HicadManufacturingLauncher.tsx"),
+      path.join(sourceDir, "src/components/HicadManufacturingLauncher.tsx")
+    );
+  }
   copyFileSync(
     path.join(customizationDir, "localization.ts"),
     path.join(sourceDir, "src/lib/hicadLocalization.ts")
@@ -211,16 +215,29 @@ function patchOfficialSource() {
     "        <HicadManufacturingPanel projectName={projectName ?? 'HiCAD 模型'} />\n",
     ""
   );
-  replaceSource(
-    "src/components/OpenedProject.tsx",
-    "import { AppHeader } from '@src/components/AppHeader'\n",
-    "import { AppHeader } from '@src/components/AppHeader'\nimport { HicadManufacturingLauncher } from '@src/components/HicadManufacturingLauncher'\n"
-  );
-  replaceSource(
-    "src/components/OpenedProject.tsx",
-    "        <StatusBar\n",
-    "        <HicadManufacturingLauncher projectName={projectName ?? 'HiCAD 模型'} />\n        <StatusBar\n"
-  );
+  if (enableManufacturingExtension) {
+    replaceSource(
+      "src/components/OpenedProject.tsx",
+      "import { AppHeader } from '@src/components/AppHeader'\n",
+      "import { AppHeader } from '@src/components/AppHeader'\nimport { HicadManufacturingLauncher } from '@src/components/HicadManufacturingLauncher'\n"
+    );
+    replaceSource(
+      "src/components/OpenedProject.tsx",
+      "        <StatusBar\n",
+      "        <HicadManufacturingLauncher projectName={projectName ?? 'HiCAD 模型'} />\n        <StatusBar\n"
+    );
+  } else {
+    replaceSource(
+      "src/components/OpenedProject.tsx",
+      "import { HicadManufacturingLauncher } from '@src/components/HicadManufacturingLauncher'\n",
+      ""
+    );
+    replaceSource(
+      "src/components/OpenedProject.tsx",
+      "        <HicadManufacturingLauncher projectName={projectName ?? 'HiCAD 模型'} />\n",
+      ""
+    );
+  }
   replaceSource(
     "src/lib/socket.ts",
     `  ws.addEventListener('open', () => {\n    ws.send(\n      JSON.stringify({\n        type: 'headers',\n        headers: {\n          Authorization: 'Bearer ' + token,\n        },\n      })\n    )\n    resolve(ws)\n  })`,
diff --git a/tests/routes/hicad-manufacturing-extension.test.ts b/tests/routes/hicad-manufacturing-extension.test.ts
index 8c9a613f6..4a879a793 100644
--- a/tests/routes/hicad-manufacturing-extension.test.ts
+++ b/tests/routes/hicad-manufacturing-extension.test.ts
@@ -44,6 +44,9 @@ test.describe('HiCAD manufacturing extension', () => {
       'utf8'
     )
 
+    expect(vendorScript).toContain(
+      'process.env.HICAD_MANUFACTURING_EXTENSION === "1"'
+    )
     expect(vendorScript).toContain(
       'vendor/zoo-modeling-app/HicadManufacturingLauncher.tsx'
         .split('/')