Research and development of emerging energy technologies; Artificial intelligence industry application system integration services; Information system integration services; Development of rail transit communication signal systems; Manufacturing of electrical signaling equipment and devices; Sales of electrical signaling equipment and devices; Sales of solar thermal power generation products; Solar power generation technical services; Solar thermal Sales of utilization products; Sales of solar thermal power generation equipment; Sales of solar thermal utilization equipment; Manufacturing of power electronic components; Sales of special equipment for environmental protection; Manufacturing of electronic components; Sales of power electronic components; Sales of lamps; Manufacturing of lighting fixtures; Sales of lighting fixtures; Battery sales; Semiconductor lighting device manufacturing; Semiconductor lighting device sales; Photovoltaic equipment and component manufacturing; Photovoltaic equipment and component sales; Agricultural machinery manufacturing; Agricultural machinery services; Agricultural machinery sales; Intelligent agricultural management; Mechanical and electrical equipment sales; Mechanical and electrical Equipment manufacturing; General mechanical equipment installation services; Distribution switch control equipment sales