Description： Polyamide Materials, its most outstanding advantage is that its wear resistance is higher than that of all other fibers; When stretching to 3-6%, the elastic recovery rate can reach 100%; It can withstand tens of thousands of times of bending without breaking. It is a very good material to replace steel, iron, copper and other metals with plastics. It is an important engineering plastics; Cast nylon is widely used to replace wear-resistant parts of machinery and equipment, copper and alloy. It is suitable for making wear-resistant parts, transmission structure parts, household appliances parts, automobile manufacturing parts, screw rod mechanical parts, chemical mechanical parts and chemical equipment. Such as turbine, gear, bearing, impeller, crank, instrument panel, drive shaft, valve, blade, screw rod, high pressure washer, screw, nut, sealing ring, shuttle, sleeve, sleeve connector, etc.