PVC plastic material The chimney of the bio-particle furnace is made of PVC plastic, which is corrosion-free and stainless, thus reducing the trouble of replacing the chimney every year and greatly saving the time, manpower and material resources of the fireman. PVC is polyvinyl chloride, which is the initiator of vinyl chloride monomer in peroxides, azo compounds and so on. Or polymers polymerized under the action of light and heat according to the free radical polymerization mechanism. Vinyl chloride homopolymer and vinyl chloride polymer are collectively called vinyl chloride resin.