vacuum packer for bag

例句：

1. 1. The vacuum packer is used to seal the bags before they are shipped.
   真空包装机用于在发货前密封袋子。
2. 2.The vacuum packer helps to reduce the weight of the packaged goods.
   真空包装机有助于减少包装商品的体积。
3. 3. The vacuum packer is a crucial tool for businesses that need to transport fragile items.
   真空包装机是那些需要运输易碎物品的企业的关键工具。