Manufacturing of electronic components and components; manufacturing of ceremonial electronic products; wholesale of electronic products; retail of automobile spare parts; retail of motorcycle spare parts; retail of communication equipment; retail of electronic components; retail of electronic products; retail of daily household appliances; retail of safety technology and prevention products; retail of switches, sockets, wiring boards, wires and cables, and insulation materials; research and development of electronic, communication and automatic control technology; computer technology development and technical services;