Polyvinyl chloride (PVC) : PVC (Polyvinyl chloride) or PVC: PVC is Polymer materials Made of vinyl chloride monomer polymerization. One of the resin is the most widely used. The product has good chemical stability, acid and alkali resistant, flame retardant is self-extinguishing from fire. Materials of the basic physical properties (tensile strength, tensile elongation, compression permanent deformation) is good, corrosion resistance, wear resistance, applicable temperature difference degree of little change in the environment. Defect is coordinate system plasticizer migration, low temperature performance is poor. It is suitable for many kinds of ordinary doors and windows.