... is divided into: PE flat bag, zipper bag, clip chain bag, envelopes, bags, punching bag, arm in arm bag, zipper bag, PE membrane. 1, PE ... indentation, and the self styled bags did not. Color printing bag, and clip chain bag can be printed with complex pattern. 4, the ... indentation, and the self styled bags did not. Color printing bag, and clip chain bag can be printed with complex pattern. 4, the ...