The baking varnish is divided into two categories, one is low-temperature baking varnish with curing temperature of 140 ° C-180 ° C, and the other is called high-temperature baking varnish with curing temperature of 280 ° C-400 ° C. [1] High temperature baking paint, which is called Polytetrafluoroethylene in English, is abbreviated as Teflon, PTFE, F4, etc. Teflon high-performance special coating is a fluoro coating with PTFE as the matrix resin. Its English name is Teflon. Because of its pronunciation, it is often called Teflon, Teflon, Teflon, Teflon, etc