square bottom plastic bag 1. PET/PE.OPP/PE.PET/VMPET/PE ... .ISO, SGS,FDA certificate 3.competitive price square bottom plastic bag ItemDescriptionsMaterial·Excellent raw material·PET/AL/PE with longest ... one side·PET/PE and NY/PE are for transparent bags.StyleStanding zipper bag, three side sealde bag, Quad-sealing ... sealability, good transparency, high handle strength endurance. square bottom plastic bag