According to the different application scope, PVC can be divided into: General PVC resin, high degree of polymerization PVC resin and cross-linked PVC resin. Universal PVC resin is formed by polymerization of vinyl chloride monomer under the action of initiator; High degree of polymerization PVC resin refers to the resin polymerized by adding chain growth agent in vinyl chloride monomer polymerization system; Crosslinked PVC resin is a resin polymerized by adding crosslinking agent containing diene and polyene into vinyl chloride monomer polymerization system.

According to the method of obtaining vinyl chloride monomer, it can be divided into calcium carbide method, ethylene method and imported (EDC, VCM) monomer method (traditionally, ethylene method and imported monomer method are collectively referred to as ethylene method).

According to polymerization methods, PVC can be divided into four main categories: suspension polyvinyl chloride, emulsion polymerization, polyvinyl chloride, bulk polyvinyl chloride and solution polyvinyl chloride. Suspension polyvinyl chloride is a variety of output, accounting for about 80% of the total PVC output. The suspension method of polyvinyl chloride is divided into six models according to the specific viscosity: XS-1, XS-2... XS-6, XJ-1, XJ-2... XJ-6. The letter means: x-suspension method; s-loose type; j-tight type.

According to the content of plasticizer, PVC plasticene plastics are often divided into: non plasticized PVC, plasticizer content is 0; hard PVC, plasticizer content is less than 10%; semi-rigid PVC, plasticizer content is 10-30%; soft PVC, plasticizer content is 30-70%; PVC paste plastics, plasticizer content is more than 80%.