Research and development of emerging energy technologies; Technical services, technical development, technical consulting, technical exchanges, technical transfer, and technical promotion; Solar power generation technology services; Sales of solar thermal power generation equipment; Sales of battery accessories; Sales of batteries; Domestic trade agency; Processing of mechanical parts and components; Sales of mechanical parts and components; Integration of intelligent control systems; Research and development of mechanical equipment; Manufacture of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Research and development of metal products; Technical imports and exports; Goods imports and exports; Import and export agency; Manufacture of batteries.