PTFE products are widely used in petroleum, chemical, machinery, automobile, metallurgy, electric power, medicine and food fields, and have extremely superior comprehensive performance: high and low temperature resistance (-192℃-260℃), corrosion resistance (strong acid, strong Alkali, aqua regia, etc.), weather resistance, high insulation, self-lubrication, non-adhesion, non-toxic and other excellent characteristics. By adding fillers such as glass fiber, metallic copper, graphite, molybdenum disulfide, carbon fiber, polyimide, etc., the mechanical properties of the material are greatly improved, thereby improving the performance and life of products for different purposes.