roll formed case

例句：

1. 1. The new product is designed with aroll formed case to protect the delicate electronics.
   这款新产品设计有卷制成型的外壳来保护那些精密的电子设备。
2. 2. Thecompany uses roll formed cases for its packagingto reduce waste and improve efficiency.
   该公司使用卷制成型的外壳进行包装，以减少浪费并提高效率。
3. 3. The rollformed case is easy toopen and close, making itconvenient for storing and transporting items.
   卷制成型的外壳易于打开和关闭，使得存储和运输物品变得方便。