The general business items are: LED lighting products, mold development and sales of LED lighting products; Development and sales of LED power products and accessories; Technology development of optoelectronic materials and acousto-optic mechatronics products, computer software and network control products, and LED luminescent materials, sales and related technical consultation; LED strip screen, LED digital display, LED indoor display, LED outdoor display, semiconductor lighting appliances technology development, sales, on-site installation; LED energy-saving products sales; Building intelligent engineering design and construction; Computer information system integration; Urban and road lighting engineering construction; Door-to-door installation of mechanical and electrical equipment; LED display engineering construction; LED lighting and lighting engineering construction; Energy-saving and environmental protection engineering design and construction; Sales of electronic products; Energy-saving lamps, electronic Technical development and sales of products, communication products, and network products; Information consultation (excluding securities consultation, human resources intermediary services and other restricted items); Investment and establishment of industries (declared separately for specific projects); Domestic trade, import and export of goods and technologies