... proof, protect from light, gas barrier;2.Security,easy to take and use;3.Strong sealing strength, non-breakage, non ... national call. In order to integrate with the international quality system, the company strictly controls and improves packaging materials, manufacture technique ... handles, ropes, or hanger hole, etc.5) Style available: stand up, zipped, heat-sealed, heat-cut, cold-cut, sealed-in ...