Retail of computer hardware and software and auxiliary equipment; Wholesale of computer software and hardware and auxiliary equipment; Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; Information Technology Consulting Services; Computer equipment sales; Network equipment sales; Office equipment sales; Instrumentation sales; Sales of metal products; Sales of metal materials; Display device sales; Network technical services; Software development; Sales of electronic special equipment; Information system integration services; Data processing services; Computer system services; Sales of cameras and equipment; Business management consulting; Management; Information consulting services (excluding licensing information consulting services); Sales of radio and television transmission equipment; Sales of electrical equipment; Repair of electrical equipment; Sales of optoelectronic devices; Sales of spare parts for household appliances; Sales of household appliances; Retail of electronic components; Sales of power electronic components; Software sales; Sales of electronic components and electromechanical components; Wholesale of electronic components; Sales of optical communication equipment; Sales of communication equipment; Sales of mobile communication equipment; Internet equipment sales; Sales of home audio-visual equipment; Retail of household appliances; Sales of daily necessities; Wholesale of daily necessities; Repair of communication equipment; Sales of office equipment consumables; Sales of communication equipment; Electronic product sales; Maintenance of computer and office equipment; Computer and communication equipment leasing; Wire and cable business