Technology development, technical service and technical consultation in the field of information technology; Graphic design; Computer system integration; Design and construction of weak current engineering and computer network engineering; Design, installation and technical consultation of intelligent equipment; Installation and maintenance of network equipment and security equipment; Sales of computers and accessories; Software development and sales; Import and export of goods or technologies (excluding those prohibited by the state or involving administrative examination and approval). (for projects subject to approval according to law, business activities can be carried out only after approval by relevant departments)