diff --git a/app/Modules/Inventory/Contracts/ProductServiceInterface.php b/app/Modules/Inventory/Contracts/ProductServiceInterface.php
index a4cd9ff..7f00167 100644
--- a/app/Modules/Inventory/Contracts/ProductServiceInterface.php
+++ b/app/Modules/Inventory/Contracts/ProductServiceInterface.php
@@ -38,4 +38,44 @@ interface ProductServiceInterface
      * @return \Illuminate\Database\Eloquent\Collection
      */
     public function findByCodes(array $codes);
+
+    /**
+     * 建立新商品。
+     *
+     * @param array $data
+     * @return \App\Modules\Inventory\Models\Product
+     */
+    public function createProduct(array $data);
+
+    /**
+     * 更新現有商品。
+     *
+     * @param \App\Modules\Inventory\Models\Product $product
+     * @param array $data
+     * @return \App\Modules\Inventory\Models\Product
+     */
+    public function updateProduct(\App\Modules\Inventory\Models\Product $product, array $data);
+
+    /**
+     * 生成隨機 8 碼代號 (大寫英文+數字)。
+     *
+     * @return string
+     */
+    public function generateRandomCode();
+
+    /**
+     * 生成隨機 13 碼條碼 (純數字)。
+     *
+     * @return string
+     */
+    public function generateRandomBarcode();
+
+    /**
+     * 根據條碼或代號查找商品。
+     *
+     * @param string|null $barcode
+     * @param string|null $code
+     * @return \App\Modules\Inventory\Models\Product|null
+     */
+    public function findByBarcodeOrCode(?string $barcode, ?string $code);
 }
diff --git a/app/Modules/Inventory/Controllers/InventoryController.php b/app/Modules/Inventory/Controllers/InventoryController.php
index ab7311e..9c26b5f 100644
--- a/app/Modules/Inventory/Controllers/InventoryController.php
+++ b/app/Modules/Inventory/Controllers/InventoryController.php
@@ -186,8 +186,11 @@ class InventoryController extends Controller
         ]);
 
         return DB::transaction(function () use ($validated, $warehouse) {
+            // 修正時間精度：手動入庫亦補上當下時分秒
+            $inboundDateTime = $validated['inboundDate'] . ' ' . date('H:i:s');
+
             $this->inventoryService->processIncomingInventory($warehouse, $validated['items'], [
-                'inboundDate' => $validated['inboundDate'],
+                'inboundDate' => $inboundDateTime,
                 'reason' => $validated['reason'],
                 'notes' => $validated['notes'] ?? '',
             ]);
diff --git a/app/Modules/Inventory/Controllers/ProductController.php b/app/Modules/Inventory/Controllers/ProductController.php
index def05c6..77a100c 100644
--- a/app/Modules/Inventory/Controllers/ProductController.php
+++ b/app/Modules/Inventory/Controllers/ProductController.php
@@ -16,6 +16,12 @@ use App\Modules\Inventory\Imports\ProductImport;
 
 class ProductController extends Controller
 {
+    protected $productService;
+
+    public function __construct(\App\Modules\Inventory\Contracts\ProductServiceInterface $productService)
+    {
+        $this->productService = $productService;
+    }
     /**
      * 顯示資源列表。
      */
@@ -195,15 +201,7 @@ class ProductController extends Controller
             'is_active' => 'boolean',
         ]);
 
-        if (empty($validated['code'])) {
-            $validated['code'] = $this->generateRandomCode();
-        }
-
-        if (empty($validated['barcode'])) {
-            $validated['barcode'] = $this->generateRandomBarcode();
-        }
-
-        $product = Product::create($validated);
+        $product = $this->productService->createProduct($validated);
 
         return redirect()->route('products.index')->with('success', '商品已建立');
     }
@@ -262,15 +260,7 @@ class ProductController extends Controller
             'is_active' => 'boolean',
         ]);
 
-        if (empty($validated['code'])) {
-            $validated['code'] = $this->generateRandomCode();
-        }
-
-        if (empty($validated['barcode'])) {
-            $validated['barcode'] = $this->generateRandomBarcode();
-        }
-
-        $product->update($validated);
+        $this->productService->updateProduct($product, $validated);
 
         if ($request->input('from') === 'show') {
             return redirect()->route('products.show', $product->id)->with('success', '商品已更新');
@@ -320,39 +310,4 @@ class ProductController extends Controller
             return redirect()->back()->withErrors(['file' => '匯入失敗: ' . $e->getMessage()]);
         }
     }
-
-    /**
-     * 生成隨機 8 碼代號 (大寫英文+數字)
-     */
-    private function generateRandomCode(): string
-    {
-        $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
-        $code = '';
-        
-        do {
-            $code = '';
-            for ($i = 0; $i < 8; $i++) {
-                $code .= $characters[rand(0, strlen($characters) - 1)];
-            }
-        } while (Product::where('code', $code)->exists());
-
-        return $code;
-    }
-
-    /**
-     * 生成隨機 13 碼條碼 (純數字)
-     */
-    private function generateRandomBarcode(): string
-    {
-        $barcode = '';
-        
-        do {
-            $barcode = '';
-            for ($i = 0; $i < 13; $i++) {
-                $barcode .= rand(0, 9);
-            }
-        } while (Product::where('barcode', $barcode)->exists());
-
-        return $barcode;
-    }
 }
diff --git a/app/Modules/Inventory/Imports/InventoryImport.php b/app/Modules/Inventory/Imports/InventoryImport.php
index c3c5294..aba1726 100644
--- a/app/Modules/Inventory/Imports/InventoryImport.php
+++ b/app/Modules/Inventory/Imports/InventoryImport.php
@@ -23,7 +23,12 @@ class InventoryImport implements ToModel, WithHeadingRow, WithValidation, WithMa
     {
         HeadingRowFormatter::default('none');
         $this->warehouse = $warehouse;
-        $this->inboundDate = $inboundDate;
+        
+        // 修正時間精度：將選定的日期與「現在的時分秒」結合
+        // 這樣既能保留使用者選的日期，又能提供精確的紀錄時點排順序
+        $currentTime = date('H:i:s');
+        $this->inboundDate = $inboundDate . ' ' . $currentTime;
+        
         $this->notes = $notes;
     }
 
@@ -95,7 +100,7 @@ class InventoryImport implements ToModel, WithHeadingRow, WithValidation, WithMa
             // 更新單價與總價值
             $inventory->unit_cost = $unitCost;
             $inventory->total_value = $inventory->quantity * $unitCost;
-            $inventory->save();
+            $inventory->saveQuietly();
 
             // 記錄交易歷史
             $inventory->transactions()->create([
diff --git a/app/Modules/Inventory/Imports/ProductImport.php b/app/Modules/Inventory/Imports/ProductImport.php
index 4dafbaf..227cda5 100644
--- a/app/Modules/Inventory/Imports/ProductImport.php
+++ b/app/Modules/Inventory/Imports/ProductImport.php
@@ -16,6 +16,7 @@ class ProductImport implements ToModel, WithHeadingRow, WithValidation, WithMapp
 {
     private $categories;
     private $units;
+    private $productService;
 
     public function __construct()
     {
@@ -25,6 +26,7 @@ class ProductImport implements ToModel, WithHeadingRow, WithValidation, WithMapp
         // 快取所有類別與單位，避免 N+1 查詢
         $this->categories = Category::pluck('id', 'name');
         $this->units = Unit::pluck('id', 'name');
+        $this->productService = app(\App\Modules\Inventory\Contracts\ProductServiceInterface::class);
     }
 
     /**
@@ -65,15 +67,8 @@ class ProductImport implements ToModel, WithHeadingRow, WithValidation, WithMapp
         $code = $row['商品代號'] ?? null;
         $barcode = $row['條碼'] ?? null;
 
-        // Upsert 邏輯：優先以條碼查找，次之以商品代號查找
-        $product = null;
-        if (!empty($barcode)) {
-            $product = Product::where('barcode', $barcode)->first();
-        }
-
-        if (!$product && !empty($code)) {
-            $product = Product::where('code', $code)->first();
-        }
+        // Upsert 邏輯：透過 Service 統一查找與處理
+        $product = $this->productService->findByBarcodeOrCode($barcode, $code);
 
         $data = [
             'name' => $row['商品名稱'],
@@ -91,58 +86,16 @@ class ProductImport implements ToModel, WithHeadingRow, WithValidation, WithMapp
         ];
 
         if ($product) {
-            // 更新現有商品
-            $product->update($data);
-            return null; // 返回 null 以避免 Maatwebsite/Excel 嘗試再次 insert
+            $this->productService->updateProduct($product, $data);
+        } else {
+            if (!empty($code)) $data['code'] = $code;
+            if (!empty($barcode)) $data['barcode'] = $barcode;
+            $this->productService->createProduct($data);
         }
 
-        // 建立新商品：處理代碼與條碼自動生成
-        if (empty($code)) {
-            $code = $this->generateRandomCode();
-        }
-        if (empty($barcode)) {
-            $barcode = $this->generateRandomBarcode();
-        }
-
-        $data['code'] = $code;
-        $data['barcode'] = $barcode;
-
-        return new Product($data);
+        return null; // 返回 null，因為 Service 已經處理完儲存
     }
 
-    /**
-     * 生成隨機 8 碼代號 (大寫英文+數字)
-     */
-    private function generateRandomCode(): string
-    {
-        $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
-        $code = '';
-        
-        do {
-            $code = '';
-            for ($i = 0; $i < 8; $i++) {
-                $code .= $characters[rand(0, strlen($characters) - 1)];
-            }
-        } while (Product::where('code', $code)->exists());
-
-        return $code;
-    }
-
-    /**
-     * 生成隨機 13 碼條碼 (純數字)
-     */
-    private function generateRandomBarcode(): string
-    {
-        $barcode = '';
-        
-        do {
-            $barcode = '';
-            for ($i = 0; $i < 13; $i++) {
-                $barcode .= rand(0, 9);
-            }
-        } while (Product::where('barcode', $barcode)->exists());
-
-        return $barcode;
     }
 
     public function rules(): array
diff --git a/app/Modules/Inventory/Services/ProductService.php b/app/Modules/Inventory/Services/ProductService.php
index 5b11e82..e1b2466 100644
--- a/app/Modules/Inventory/Services/ProductService.php
+++ b/app/Modules/Inventory/Services/ProductService.php
@@ -110,4 +110,72 @@ class ProductService implements ProductServiceInterface
     {
         return Product::whereIn('code', $codes)->get();
     }
+
+    public function createProduct(array $data)
+    {
+        if (empty($data['code'])) {
+            $data['code'] = $this->generateRandomCode();
+        }
+
+        if (empty($data['barcode'])) {
+            $data['barcode'] = $this->generateRandomBarcode();
+        }
+
+        return Product::create($data);
+    }
+
+    public function updateProduct(Product $product, array $data)
+    {
+        if (empty($data['code'])) {
+            $data['code'] = $this->generateRandomCode();
+        }
+
+        if (empty($data['barcode'])) {
+            $data['barcode'] = $this->generateRandomBarcode();
+        }
+
+        $product->update($data);
+        return $product;
+    }
+
+    public function generateRandomCode()
+    {
+        $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+        $code = '';
+        
+        do {
+            $code = '';
+            for ($i = 0; $i < 8; $i++) {
+                $code .= $characters[rand(0, strlen($characters) - 1)];
+            }
+        } while (Product::where('code', $code)->exists());
+
+        return $code;
+    }
+
+    public function generateRandomBarcode()
+    {
+        $barcode = '';
+        
+        do {
+            $barcode = '';
+            for ($i = 0; $i < 13; $i++) {
+                $barcode .= rand(0, 9);
+            }
+        } while (Product::where('barcode', $barcode)->exists());
+
+        return $barcode;
+    }
+
+    public function findByBarcodeOrCode(?string $barcode, ?string $code)
+    {
+        $product = null;
+        if (!empty($barcode)) {
+            $product = Product::where('barcode', $barcode)->first();
+        }
+        if (!$product && !empty($code)) {
+            $product = Product::where('code', $code)->first();
+        }
+        return $product;
+    }
 }
diff --git a/resources/js/Components/ActivityLog/ActivityDetailDialog.tsx b/resources/js/Components/ActivityLog/ActivityDetailDialog.tsx
index 9fc49ab..2c1abfa 100644
--- a/resources/js/Components/ActivityLog/ActivityDetailDialog.tsx
+++ b/resources/js/Components/ActivityLog/ActivityDetailDialog.tsx
@@ -336,7 +336,7 @@ export default function ActivityDetailDialog({ open, onOpenChange, activity }: P
         if ((key === 'order_date' || key === 'expected_delivery_date' || key === 'invoice_date' || key === 'arrival_date' || key === 'expiry_date' || key === 'received_date' || key === 'production_date') && typeof value === 'string') {
             return value.split('T')[0].split(' ')[0];
         }
-        if ((key === 'snapshot_date' || key === 'completed_at' || key === 'posted_at' || key === 'created_at' || key === 'updated_at') && typeof value === 'string') {
+        if ((key === 'snapshot_date' || key === 'completed_at' || key === 'posted_at' || key === 'created_at' || key === 'updated_at' || key === 'actual_time') && typeof value === 'string') {
             try {
                 const date = new Date(value);
                 return date.toLocaleString('zh-TW', {