... / PE; PET/ VMPET/ PE;matte OPP/ VMPET/ PE; PET/ VMPET-PET/ PE allow clear window in one side;PET/PE and NY/PE are for transparant bags ... . 3. Style: stand up with zipper bag, three side sealed bag, Quad-sealing bags.4 ... Our leading products involve the Coffee bags, Food bags,Pet food bags,Aluminum foil bags, Shrinking labels, Rice Bags...We have our own QC lab ...