Bopp Square Bottom Bag can be used for a variety of products，they are made of 100% virgin PP resin that can be sturdy and resistant to puncture, tear and moisture, ensuring the safety and longevity of their contents. It is a versatile packaging solution made of durable Biaxially Oriented Polypropylene (BOPP) material with a sturdy square bottom structure. It can be open mouth or with inserted valve on the top