Auto parts refer to all components and systems that make up a car, covering thousands of independent parts from screws, bearings to engines, gearboxes, etc. It covers everything from core power components such as engines and gearboxes to small accessories such as screws and wiring harnesses, with the number of parts ranging from 10,000 to 30,000.

Usually divided into the following categories: power system components, chassis systems, body and interior and exterior decoration, electrical and electronic systems, other key components, etc. They are the basic elements of automobile manufacturing, maintenance and function realization, and work together to ensure the normal operation of the vehicle.