Engages in the research, development, sales, installation, maintenance, and technical services of electronic products, photoelectric products, laser equipment, Internet of Things devices, monitors, displays, lighting, audio equipment, advertising machines, audio and video processors, and related products; computer hardware and software, and accessories; security monitoring products, communication equipment, environmental protection equipment, energy-saving equipment, and machinery and equipment; sales and assembly of hardware, electrical appliances, cabinets, and video walls; self-operated and agency import and export of all kinds of goods and technologies; design and construction of low-voltage intelligent engineering systems, communication engineering, network engineering, and electronic engineering; information system integration services.