Manufacturing of automotive parts and accessories; sales of electrical signal equipment devices; leasing services (excluding licensed leasing services); manufacturing of electrical signal equipment devices; vehicle towing, rescue, and obstacle removal services; retail of automotive parts; sales of automobiles; wholesale of automotive parts; motor vehicle repair and maintenance; research and development of automotive parts; sales of new energy vehicles; sales of metal matrix composites and ceramic matrix composites; manufacturing of high-performance fibers and composites; sales of high-performance fibers and composites; research and development of new material technologies; manufacturing of new membrane materials; sales of new membrane materials; technical services, development, consulting, exchange, transfer, and promotion; retail of computer software and hardware and auxiliary equipment; import and export of goods; import and export of technologies; leasing of special equipment; sales of special equipment; manufacturing of plastic products; sales of plastic products; research and development of metal products; sales of metal products; sales of synthetic materials; geological disaster control services; sales of rail transit special equipment, key systems, and parts; manufacturing of high-speed rail equipment and parts; sales of high-speed rail equipment and parts; manufacturing of railway locomotive and rolling stock parts; sales of railway locomotive and rolling stock parts; manufacturing of urban rail transit equipment; sales of rail transit engineering machinery and parts; sales of metal materials; repair of special equipment; domestic freight forwarding. Licensed items: production of road motor vehicles.