Computer software and hardware development; computer information system integration, wiring, undertaking network engineering construction projects, information technology and digital technology development and services, computer network technology services, network security information consulting; computer information security equipment manufacturing; monitoring system engineering services; security monitoring and anti-theft alarm system engineering services; computer network system engineering services; security technology prevention system design, construction, and maintenance; security system monitoring services; science and technology information consulting services; network technology research and development; computer integrated machine manufacturing; computer components manufacturing; computer power manufacturing; computer power supply manufacturing; Computer peripheral equipment manufacturing; computer-applied electronic equipment manufacturing; computer room maintenance services; computer and communication equipment leasing; computer technology development and technical services; computer room design services; computer information security product design; computer and auxiliary equipment repair; electronic product design services; security technology prevention product manufacturing; secure smart card equipment and system manufacturing; intelligent installation engineering services; smart card system engineering services; intelligent machine system technology services; radar and ancillary equipment manufacturing; professional repair of radar and radio navigation equipment; radar, navigation and control system engineering Installation services; lightning protection equipment manufacturing; lightning protection engineering professional construction; lightning protection equipment sales; lightning protection engineering professional design services; book data processing and storage technology development; data processing and storage product design; electronic automation engineering installation services; building equipment automatic control system engineering services; mechanical and electrical equipment installation services; communication system equipment manufacturing; communication system engineering services; communication equipment retail; satellite communication technology research and development; communication engineering design services; communication system equipment product design; electronic engineering design services; electronic engineering design services; electronic engineering design services; housing leasing; Integrated circuit design; integrated circuit layout design agency services; industrial robot manufacturing; key management equipment and system manufacturing; small computer room manufacturing; integrated cabinet manufacturing; communication terminal equipment manufacturing; electronic whiteboard manufacturing; navigation, meteorology and marine special instrument manufacturing; robot system production; intelligent machine system production. Sales: Computers and their supporting equipment, cultural goods, electronic products, security technology prevention products, radio and television equipment (excluding terrestrial reception equipment and transmission facilities for satellite TV broadcasts); information service business (Internet information service business in Guangdong Province only, excluding news, publishing, education, medical care, pharmaceuticals, medical equipment, electronic bulletins, and other service items requiring prior approval or special approval according to laws and regulations, operated under a valid license); information service services in value-added telecommunications services in Class II telecom value-added services (excluding fixed network telephone information services and Internet information services, subject to validity) (Licensed operation).