Poly(tetrafluoroethylene)(PTFE), Polyetheretherketone(PEEk) has good electric insulating property, self-lubricating property and resistant to chemical products, have high strength, anti-creep deformation, resistant to heat and cold. Widely used in PCB printed circuit board weting processing equipment, FPD industry wet processing equipment and other electronic industry as bearing, thrust bearing, roller, plus-minus clapboard etc.