What are auto parts made of? Automotive accessories include: from the structural point of view, all “Parts”are “Whole”parts; from the production point of view, independent enterprise production, supporting components for the host factory. Generally speaking, the parts are not very different, but another related concept-assembly is different, it refers to a separate system, which can be considered a separate part of the car, however, it is worth noting that for some historical reasons, tyre batteries, instrument windshields and other components. Although it belongs to “Correlation Block”, but also can be broadly included in the auto parts production line. There are narrow and broad sense of auto parts. As far as automobile parts in a broad sense are concerned, the key parts such as engine assembly, Transmission Assembly and related parts, casting and forging blanks are listed as research objects in addition to the types of parts and components currently listed as production parts. In addition, while agencies are often independent of statistics, they are also considered to be universally applicable to auto parts. Some Western European countries also pay special attention to the automotive parts industry, such as automotive paint, which has a direct impact on the development of automobiles. Different countries do not have a unified classification of auto parts, generally according to the single principle in accordance with the use of a defined classification. Auto parts can be classified by end use, that is to say, different parts of the car can be installed by classification. Small examples from Guangzhou Handa Automobile Institute: such as body parts, transmission parts, chassis parts, etc. , used primarily for business or statistical purposes.Engine Parts: a total of 29, the main components are piston ring, cylinder liner, Valves, fuel pump, electronic fuel injection pump and so on. (2) electrical and electronic equipment: 12 pieces. The main components include starter, generator, spark plug, engine control, brake electronic component and sensors. (3) lighting apparatus and other electrical and electronic equipment: 15 in total. The main components are motor, such as wiper motor, switch, steering wire harness, etc. . Power transmission and control unit components: A total of 26, the main components are clutch, manual transmission, automatic transmission, power steering, constant speed universal joint, axle, wheel, transmission, lever. Suspension system and brake parts: 20 in total. The main components are steel plate spring damper brake (brake drum brake disc brake auxiliary equipment brake hose) . There were 19 of them. The subject has a framework. Fuel Tank, window frame, door handle, seat lock, seat spring seat belt, etc. . (7) accessories: A total of 9, the main parts and components are clock recorder, air conditioning heating device, wheel cover repair paint car stereo sound device. According to the market structure, according to the supporting market of the maintenance market and the parts and components of the maintenance market of the international market that exports automobile maintenance services, the auto parts are divided into the following four categories: a Category B general-purpose Parts, for Two or more basic vehicle maintenance service parts and components used in the domestic market. C class bicycle basic series service accessories special accessories, suitable for local market. Class-an export-oriented component used primarily for exporting. Facing the international market. Auto parts are usually divided into two categories: Assembly and maintenance.