PA (polyamide), commonly known as nylon, has high strength, wear resistance, chemical corrosion resistance, and self - lubrication. In the manufacturing of mechanical parts, its high strength enables it to bear large loads and is often used to manufacture key components such as gears and shafts, ensuring the normal operation of machinery. Its wear - resistant property reduces the wear of parts during long - term operation, extending the service life of machinery and reducing maintenance costs. Its self - lubrication can reduce the friction coefficient, reduce energy consumption, and improve mechanical efficiency. In the field of automotive parts, it can be used to manufacture some small components inside the engine, car seat belts, etc., ensuring the strength and wear resistance of parts while meeting the use requirements of cars in various environments. In the field of electronic and electrical components, it can be used to make connectors, sockets, etc. Its chemical corrosion resistance enables it to work stably in complex electronic environments.