the resin are mainly used as insulating film for electric ,the products of thin wall,seal,gasket ,club ,panel ,axletree,sealring 1.PTFE is packed in double layer PVC bags inside and in hard circular barrels outside,On the barrel ,there should be attached label and quality certificate ,on which there are brand,trademark,executive criterion,type,grade,lot No.,and net content ,pack date,checker, ...