Zipper bag 1)Material:Food Grade LDPE 2)Leakage-proof,Water-proof,Hi-transparent 3)Thinkness:40- ... 150mic 4)Color:Customized Zipper Bag1) Material:LDPE.2) Certification: FDA, SGS, ISO22000, ISO9001:2000 3) The zip ... for food 4) There are no impurities because of the low density of materials,all the zipper bags are watertight.5) Easy ...