Hardware products wholesale; Electrical equipment wholesale; Wholesale of computer, software and auxiliary equipment; Telecommunications and radio and television equipment wholesale; Other mechanical equipment and electronic products wholesale;

Hardware retail; Communication equipment retail; Computer, software and ancillary equipment retail; Other retail trade not listed (excluding items subject to approval); Software development; Trade agency; Electrical installation; Supply chain management; Integrated circuit design; Business information consulting; Professional design services; Plumbing and equipment installation; Information system integration service; Information technology consulting services; Other technology extension services; Machinery and equipment storage services; Wiring and equipment engineering construction; Data processing and storage services; Other trade brokers and agents; Other construction and installation businesses not listed; Engineering and technical research and experimental development; Advertisement design, production, agency and release; Other services not listed for extension and application of science and technology; Other business services not listed (excluding items subject to approval); Other information technology services not listed (excluding items subject to approval); Other professional consulting services not listed (excluding items subject to approval); Other professional and technical services not listed (excluding matters subject to approval); Internet sales; Engaged in the import and export of all kinds of commodities and technologies (without the import and export commodity catalogue attached), except for the commodities and technologies that are restricted by the state or prohibited from import and export.