Polyvinyl chloride. English abbreviated PVC. It is a polymer of vinyl chloride monomer (VCM) in the presence of an initiator such as a peroxide or an azo compound; or a polymerization polymerization mechanism under the action of light or heat. The vinyl chloride homopolymer and the vinyl chloride copolymer are collectively referred to as vinyl chloride resins.
PVC was once the world's largest production of general-purpose plastics, and it is widely used. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foam materials, sealing materials, fibers, etc. PVC materials have been used in the water purification industry for a long time. They were once replaced by new materials, but the research and development of PVC alloy ultrafiltration membranes has established itself in the water purification industry. At present, there are only a handful of water purifiers using PVC alloy ultrafiltration membrane technology in China. Among them, the PVC alloy ultrafiltration membrane technology developed by the domestic water purifier brand has been certified by the US NSF and will be released at the 2010 Shanghai World Expo. The splendid  has formed a unique situation in China.