(1)PVC is a macromolecule compound formed from the VCM polymerizing.(2)PVC resin is a general synthetic resin, applying widely, used in PVC rigid products\soft products\dope and bond producing or processing. It can classify as follows according to its application fields.A) construction material: Feed and drain pipe\tubes\board\novel type material etc.B) wrapper: Foodstuff\tobacco packing film.C) electron equipment: Such as wire\cable\adhesive tape\bolt D) furniture\ornament materials.E) else: Such as motor material\medical instrument etc.(3)quality: Accord with the standard of GB4803-94.