This product is used for medical and special packing (bottle- packed and bag- packed). It is widely used in medical, food, cosmetic, oil, chemistry, pesticide, feedstuff and nonmetal airproof container. Because of its beautiful figure, it can be printed the design, it has the advantage of strong prevention. It also has the function of dampproof, preventing the leak, preventing the disguise, preventing the stealing, thus enhance the products grade, and prolong the preservation time.