diff --git a/app/Http/Controllers/Api/AgentProductController.php b/app/Http/Controllers/Api/AgentProductController.php
index 32bc48d..1e23c43 100644
--- a/app/Http/Controllers/Api/AgentProductController.php
+++ b/app/Http/Controllers/Api/AgentProductController.php
@@ -131,6 +131,8 @@ class AgentProductController extends Controller
 				$list = array_filter($specs, fn($v) => $v['name'] == $name);
 				$result[] = [
 					'name' => $name,
+					'date_start' => min(array_column($list, 'date')),
+					'date_end' => max(array_column($list, 'date')),
 					'original_price' => min(array_column($list, 'original_price')),
 					'price' => min(array_column($list, 'price')),
 					'list' => array_values($list),