Auto parts processing is a complex and delicate process involving multiple processes and technologies. There are many types of accessories, mainly including car navigation, car instruments and accessories. The processing accuracy of auto parts is very high to ensure its matching accuracy with other parts and overall performance. Products need to withstand various complex mechanical environments, so they are required to have high strength and durability. We can select suitable raw materials according to the functions and requirements of accessories, such as high-strength steel, aluminum alloy, etc., including reasonable processing technology and tooling fixtures designed according to the shape, size and precision requirements of accessories, and carry out strict quality control during the processing, including dimensional measurement, surface quality inspection, etc., to ensure that the product quality meets the design requirements.