Basic telecommunication services; The first category of value-added telecommunication services; The second category of value-added telecommunication services (items subject to approval according to law, and operating activities can only be carried out after approval by relevant departments) general items: Network technology services; Information technology consulting services; Information consulting services (excluding licensed information consulting services); Information system operation and maintenance services; Business training (excluding educational training, vocational skills training, etc. That require licenses); Retail of computer software, hardware and auxiliary equipment; Sales of network equipment; Technical services, Technology development, technology consulting, technology exchange, technology transfer, technology promotion; Enterprise management consulting; Marketing planning; Electronic product sales; Internet security services; Internet equipment sales; Computer system services; Advertising design, agency; Advertising release