Design, processing, and manufacturing of special lighting towers, special high-efficiency welding equipment, new technology equipment for facility agriculture and water-saving irrigation (agricultural power generation equipment, power pumps, power units), power generation equipment and related parts; providing maintenance, repair, and corresponding after-sales services; sales of self-produced products; import and export of special lighting towers, special high-efficiency welding equipment, new technology equipment for facility agriculture and water-saving irrigation (agricultural power generation equipment, power pumps, power units), power generation equipment and related parts (excluding special commodities); domestic procurement and wholesale of special lighting towers, special high-efficiency welding equipment, new technology equipment for facility agriculture and water-saving irrigation (agricultural power generation equipment, power pumps, power units), power generation equipment and related parts (excluding special commodities); commission agency. General items: Leasing services (excluding licensed leasing services); Operation of electric vehicle charging infrastructure; Parking lot services; Advertising publishing; Road freight transport for vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); Installation services for general mechanical equipment; Business training (excluding educational training, vocational skills training, and other training requiring licensing); Manufacturing of generators and generator sets; Sales of generators and generator sets; Technical services, technology development, technical consulting, technical exchange, technology transfer, technology promotion; Sales of solar thermal power generation products.