diff --git a/backend/app/plugins/wiaas/includes/class-wiaas-cart.php b/backend/app/plugins/wiaas/includes/class-wiaas-cart.php
index 35eae1e..b18881c 100644
--- a/backend/app/plugins/wiaas/includes/class-wiaas-cart.php
+++ b/backend/app/plugins/wiaas/includes/class-wiaas-cart.php
@@ -441,18 +441,22 @@ class Wiaas_Cart {
 			if ($product->is_type('simple') && !Wiaas_Product_Category::is_installation($product)){
 				$supplier_id = Wiaas_Product::get_supplier_id($product->id);
 				$supplier_name = wiaas_get_organization_name($supplier_id);
-				$suppliers[] = array(
-					'id' => $supplier_id,
-					'name' => $supplier_name,
-					'estimated_date' => NULL,
-					'confirmed_date' => NULL,
-					'tracking_info' => array()
-				);
+				if (!isset($suppliers[$supplier_id])){
+					$suppliers[$supplier_id] = array(
+						'id' => $supplier_id,
+						'name' => $supplier_name,
+						'estimated_date' => NULL,
+						'confirmed_date' => NULL,
+						'tracking_info' => array(),
+						'items' => array($product->id)
+					);  
+				}else{
+					$suppliers[$supplier_id]['items'][] = $product->id;
+				}
 			}
 		}
 
-		$filtered_suppliers = array_unique($suppliers, SORT_REGULAR);
-		$order->add_meta_data('_wiaas_suppliers', $filtered_suppliers, true);
+		$order->add_meta_data('_wiaas_suppliers', $suppliers, true);
 
 		// add additional date fields to order
 		$order->add_meta_data('_wiaas_global_estimated_delivery_date', NULL, true);