Business scope includes general items: Engineering and technical research and experimental development; Science and technology promotion and application services; Science and technology intermediary services; Research and development of mechanical equipment; Wholesale of electronic components; Retail of electronic components; Wholesale of hardware products; Retail of hardware products; Internet sales (except for sales of goods requiring permission); Sales of electrical equipment; Sales of mechanical and electrical equipment; Sales of mechanical equipment; Sales of instruments and meters; Wholesale of computer software, hardware and auxiliary equipment; Retail of computer software and hardware and auxiliary equipment; Sales of communication equipment; Repair of general equipment; Repair of electrical equipment; Repair of special equipment; Import and export of technology; Import and export of goods; Import and export agency. (With the exception of projects subject to approval in accordance with the law, business activities shall be carried out independently in accordance with the law with the business license).