Automobile sales; Manufacturing of auto parts and accessories; Retail of auto parts; Research and development of auto parts; Sales of new energy vehicles; Manufacturing of metal structures; Manufacturing of hardware products; Sales of metal products; Sales of metal materials; Manufacturing of general equipment (excluding special equipment); Sales of hydraulic power machinery and components; Manufacturing of hydraulic power machinery and components; Import and export of goods; Sales of mechanical equipment; Technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; Motor vehicle repair and maintenance; Sales of fire-fighting equipment; Steel rolling processing; Manufacturing of containers; Sales of containers. Permitted items: Production of road motor vehicles.