What are the uses of polytetrafluoroethylene?

People use polytetrafluoroethylene to make low-temperature equipment to produce and store liquid air; In chemical plants, polytetrafluoroethylene is used to make corrosion-resistant reaction tanks, battery shells, pipes and filter plates; In the electrical industry, 15 micron thick polytetrafluoroethylene is wrapped on the bare metal wire, which can well insulate the wires from each other; In the pharmaceutical industry, people use polytetrafluoroethylene to make artificial bones, cartilage and surgical instruments, because it is harmless to human body, and can be disinfected by alcohol, pressure cooker heating and other methods. In addition, PTFE is also used to manufacture radar, high-frequency communication equipment, short wave equipment, etc.