The registration address of shenzhen city's cheonan-ann science and technology ltd. Is located in the ligang industrial zone, ligang community, shenzhen city, at no. 511c. The registration authority is the shenzhen market supervision authority, represented by lin joon-ching, and operates on a general basis, including the development and sale of security products, fire safety products, smart home-based products and smart building products; information consultancy; design, construction, maintenance and technical consulting services for security engineering; investment promotion in business (detailed projects); domestic trade; export/import operations; smart video image analysis systems, smart transport system products, network exchange products, security systems, wireless communications equipment, digital security equipment and systems, satellite location video-based intelligence terminals on board, vehicle-borne video-based video intelligence terminal equipment, technology development and marketing of digital multimedia equipment and systems, up-to-door maintenance and technical advice. (except for projects prohibited by law, administrative regulations; projects restricted by law, administrative regulations are subject to a licence to operate) and the licensed projects are: