Bag in box (BIB) is widely used for liquid packing, especially for big volume packing. It is totally different from old bottle packing, the liquid is easy to pull out, but the air can not go into the bags when dumpage. When the liquid becomes less, the bag will shrink accordingly. Moreover, when we open the bag, the liquid inside still can be kept fresh for a long time, but if in bottle, the liquid will turn bad easily. To suit different application, customer can choose different materials. BIB is good for the packing of wine, drink juice, oil, etc. It has high fresh preservation, easy using and transportation, lower cost stongpoints.