... pulp paper \Kraft paperWoven PP material \polypropylene\HDPE\plastic material, ect.Layer2-5layers, can addpo\pe\kraft ... 65*110Widly usemetal , cement, feed, fertilizer, chemical products, engineering plastic, milk powder, food, feed additives, nanometer material and new ... industry packaging.Bottom kindValve port\sealing bottom Packaging kindPaper plastic bag, multi-layer bag, paste bottom bags(valve ...