Non-metallic materials used in automobiles include plastics, rubber, adhesive sealants, friction materials, woven fiberglass fabrics, glass fiber matting and other materials, involving petrochemical, light industry, textile,fiberglass building materials and other related industrial sectors, so non-metallic materials are used in automobiles It reflects the comprehensive strength of a country's economy and technology, and also includes the technological development and application capabilities of a large number of related industries.