Computer system services; research and development of Internet of Things technology; sales of electronic products; sales of power electronic components; sales of communication equipment; operation of wires and cables; research and development of special electronic materials; wholesale of hardware products; retail of hardware products; sales of electrical equipment; sales of electrical instruments; sales of first-class medical equipment; sales of pneumatic and electric tools; retail of daily household appliances; sales of audio equipment; retail of automobile parts and accessories; retail of motorcycles and spare parts; sales of instruments and meters; conference and exhibition services; and research and development of household appliances. Licensed items: Wire and cable manufacturing.