Fluorine chemical industry +pvc= chlor-alkali chemical industry. The relationship between chlor-alkali chemistry and fluorine chemistry is fluorine chemistry +pvc= chlor-alkali chemistry. Polyvinyl chloride (PVC) is the initiator of vinyl chloride monomer in peroxides, azo compounds and so on. Or a polymer polymerized under the action of light and heat according to a free radical polymerization mechanism.