Sale of automobiles; Manufacture of auto parts and accessories; Sale of new energy vehicles; Maintenance and repair of motor vehicles; Sale of special equipment; Software development; Domestic freight transport agency; Sale of Class I medical devices; Sale of Class II medical devices; Import and export of goods; Technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion; Sale of environmental protection special equipment; Manufacture of environmental protection special equipment; Sale of metal products; Sale of metal chains and other metal products; Repair of metal products; Manufacture of metal chains and other metal products; Processing of mechanical parts and components; Sale of mechanical parts and components; Labor services (excluding labor dispatch); Non-ferrous metal rolling processing; Steel rolling processing; Sale of fire-fighting equipment; Research and development of metal products; Research and development of auto parts; Research and development of mechanical equipment; Sale of building materials. Licensed items: Manufacture of road motor vehicles; Installation, modification and repair of special equipment; Manufacture of special equipment; Design of special equipment; Road freight transport (excluding dangerous goods); Operation of Class III medical devices.