Computer information technology, network technology development, technical consulting and technical services; Enterprise management consulting, business information consulting; Corporate image planning and marketing planning; Exhibition and display services. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General projects: Data processing and storage support services; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Information system integration services; Network and information security software development; Network technology services; Software development; Manufacturing of instruments and meters; Sales of instruments and meters; Integration of intelligent control systems; Engineering management services; Wastewater treatment and its recycling and utilization; Photography and video production services; Digital content production services (excluding publishing and distribution); Wholesale of computer software, hardware, and auxiliary equipment; Retail of computer software, hardware, and auxiliary equipment (except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law)