There are various metals used in making wiring which are coated by PVC. The wire products include copper, iron wire, stainless steel wire, galvanized iron wire as well as brass wire. However the main use of PVC coating is still in making electrical wiring using copper. PVC coated wire drastically reduces fire hazards and makes wiring safer. With the increasing utility of PVC the overall PVC manufacturing is assumed to exceed 40 million tons in few years.