Auto parts research and development; auto parts and accessories manufacturing; auto parts wholesale; auto parts retail; high-speed rail equipment and accessories manufacturing; high-speed rail equipment and accessories sales; spring manufacturing; spring sales; motorcycle and parts research and development; motorcycle parts manufacturing; motorcycles and parts wholesale; motorcycles and spare parts Retailing of accessories; sales of assisted bicycles, scooters and spare parts; manufacturing of rubber products; sales of rubber products; research and development of metal products; sales of metal products; manufacturing of automobile wheels; manufacturing of general parts; processing of mechanical parts and parts; sales of mechanical parts and parts; manufacturing of molds; sales of molds; special electronics Material research and development; electronic component manufacturing; electronic component wholesale; electronic component retail; intelligent vehicle equipment manufacturing; intelligent vehicle equipment sales; intelligent instrumentation manufacturing; intelligent instrumentation sales; software development; software sales; technical services, technology development, technical consultation, technology exchange, technology transfer, Technology promotion; engineering and technology research and experimental development; information technology consulting services; leasing services (excluding licensed leasing services); non-residential real estate leasing; labor services (excluding labor dispatch); intellectual property services (except patent agency services); import and export of goods; import and export of technology; import and export agency.