People use polytetrafluoroethylene to manufacture low-temperature equipment for the production and storage of liquid air; in chemical plants, polytetrafluoroethylene is used to manufacture corrosion-resistant reaction tanks, battery shells and tubes, filter panels; in the electrical industry, in the metal of the bare wire outsourcing on the 15 micron-thick polytetrafluoroethylene, can be very well insulated from each other wires; in the pharmaceutical industry, people use polytetrafluoroethylene to manufacture artificial In the pharmaceutical industry, people use PTFE to make artificial bones, cartilage and surgical instruments, because it is harmless to human body, and can be sterilized by alcohol, autoclave heating and other methods. In addition, PTFE is also used to manufacture radar, high-frequency communication equipment, short-wave equipment.