General business items: technology development, technology transfer, technology consultation and technical service in the field of electronic technology, computer software and hardware, communication technology; computer system integration; communication products and computer software and hardware development and home maintenance; technology development and sales of face recognition terminal, electronic component, smart card and smart lock; Design and construction of computer network engineering; construction of communication construction engineering; design and construction of public security technology prevention engineering; design, R & D and sales of mechanical equipment, intelligent electronic products, face recognition equipment, intelligent card equipment, intelligent equipment software and hardware, computer software and hardware system, intelligent channel gate, electrical automatic control equipment; system integration technical consultation, maintenance, technology Technology development, technical services; password fingerprint lock, hardware products, metal products, molds and accessories, traffic management equipment and facilities in the parking lot, smart card reading and writing management equipment, smart charging pile, electronic control; Design and sales of automatic doors and mechanical and electrical products; leasing of mechanical equipment (excluding financial leasing); purchase and sales of electronic products, communication products and computer software and hardware (excluding financial leasing); installation and sales of entrance and exit controllers, access controllers, road gates, IC card readers and writers, three roller gates and access gates in parking lot; Technical development and sales of anti-theft alarm system, building intercom and TV monitoring system; business information consultation; cultural activity planning; conference activity planning; exhibition and display planning; investment and establishment of industry (specific projects to be declared separately); domestic trade; import and export business. (except for the items prohibited by the above laws, administrative regulations and the decision of the State Council, the restricted items can only be operated after obtaining permission) technology development, technology transfer, technical consultation and technical services in the field of electronic technology, computer software and hardware, communication technology; computer system integration; communication products and computer software and hardware research and development and on-site maintenance; computer network engineering Design and construction; communication construction engineering construction; design and construction of public security technology prevention engineering; design, R & D and sales of mechanical equipment, intelligent electronic products, face recognition equipment, intelligent card equipment, intelligent equipment software and hardware, computer software and hardware system, intelligent channel gate, electrical automatic control equipment; system integration technical consultation, maintenance, technical development and technical services Production of class I medical devices, class II and class III medical devices Sales, office supplies, plastic products, injection mold, password fingerprint lock, hardware products, metal products, auto parts, mold and accessories design and sales; mechanical equipment leasing (excluding financial leasing); electronic products, communication products and computer software and hardware purchase and sales, leasing (excluding financial leasing); business information consulting; cultural activity planning; conference activities Dynamic planning; exhibition planning; investment in Industrial Development (specific projects to be declared separately); domestic trade; import and export business. (except for the items prohibited by the above laws, administrative regulations and the decision of the State Council, the restricted items can only be operated after obtaining permission); research and development and sales of temperature measuring equipment; sales of environmental protection and sanitation equipment. Sales of class II medical devices in medical device business license and medical device production enterprise license.