Engaging in domestic trade; Import and export of goods and technologies. Sales of communication equipment; Sales of electronic products; Sales of electrical accessories; Network equipment sales; Retail of computer software, hardware and auxiliary equipment; Retail of electronic components; IC sales; Sales of lighting appliances; Sales of power electronic components; Sales of semiconductor lighting devices; Sales of semiconductor discrete devices; Sales of mechanical and electrical equipment; Sales of mobile terminal equipment; Integrated circuit chip design and service; Integrated circuit design; Sales of integrated circuit chips and products; Manufacturing of integrated circuit chips and products; Integrated circuit manufacturing; Manufacturing of power electronic components; Wholesale of electronic components; Sales of special electronic materials; Manufacturing of special electronic materials; Optoelectronic device sales; Sales of electronic measuring instruments; Sales of special electronic equipment; Manufacturing of electronic components; Manufacture of optoelectronic devices; Sales of electronic office equipment