... -breakage, non leakage7. bag type: three-side seal bag(with zipper or not), side-gusset bag, central seal bag, stand-up bag(with zipper or ... , size, printing, sealing, packing, material and so on11. usage: Plastic bag can provide convenience to hold something as a cheap container ... , such as PP,PE,OPP/PET/PA/AL. And the bag can be plastic- plastic laminated packing bags , plastic -aluminum laminated ...