Auto parts include engine parts, transmission parts, brake parts, steering parts, traveling parts and electrical instrument parts.

1. Engine accessories include engine, engine assembly, throttle body, cylinder block, tensioner, etc. Transmission accessories include clutch, transmission, shift lever assembly, reducer, magnetic materials, etc. Steering accessories include kingpin, steering gear, steering knuckle, ball pin, etc.

2. Auto parts are the units that constitute the whole auto parts processing and the products that serve the auto parts processing. All electronic components, whether compressors, pumps, motors, control units or increasingly popular sensors of active safety systems, will be affected by large temperature fluctuations throughout their life cycle.

3. The automobile consists of about 20000 parts, of which iron parts account for the vast majority. Although collectively referred to as iron, steel plates are used to form the frame of the car body frame and the body part to shape the overall car model, and castings made by melting and injecting iron into the mold are used for the gearbox and other box parts. Aluminum is used for engine and suspension, copper and other metals are used for wiring, and platinum and other precious metals are used as catalysts for purifying exhaust gases.