Pvc-c, the full name of chlorinated polyvinyl chloride, is a new type of engineering plastic with wide application prospects. The resin is produced by chlorination modification of polyvinyl chloride (PVC) resin. After chlorination of PVC resin, the non-uniformity of molecular bonds increases, the polarity increases, improves the solubility and chemical stability of the resin, thereby improving the heat resistance of the material, acid resistance, alkali, salt, oxidant and other corrosion effects, the product is tasteless, odorless, non-toxic, of which our PVC-C CORZAN has the best performance, the chlorine content in the resin can reach more than 74%. The chlorine content in raw materials and products reaches 60%.