diff --git a/app/Services/BillDetailService.php b/app/Services/BillDetailService.php
index 4a8264f..c1b2d3b 100644
--- a/app/Services/BillDetailService.php
+++ b/app/Services/BillDetailService.php
@@ -85,6 +85,8 @@ class BillDetailService
                 'quantity' => $quantity,
                 'weight' => $weight,
                 'amount' => $amount,
+                'spec' => $product->spec,
+                'price_unit' => $product->price_unit,
                 'image_ids' => (array) $first->image_ids,
                 'category_sort' => (int) ($product->category->sort ?? 9999),
                 'product_sort' => (int) ($product->sort ?? 9999),