The registration address of china-chai chongcheng smart science and technology ltd. Is located in room a, 9 fengdong street, yang song township, huairou city, beijing. The registration authority is the market supervision authority for the huairou district, beijing. It operates on behalf of legal persons and includes general items: technical services, technical development, technical advice, technology exchange, technology promotion; sale of furniture; sale of office supplies; sale of construction materials; retailing of hardware products; rental of cultural equipment; retailing of sports and equipment; sale of electrical equipment; sale of mineral machinery; sale of smart instrument instruments; sale of electronic specialized equipment; sale of equipment for the supply of instrument instruments; sale of specialized equipment for petroleum drilling; sale of metallurgy equipment; sale of metal tools; sale of micro-electric machines and components; data processing services; dual-intelligence service platform; sale of artificial intelligence applications; internet data services; development of artificial smart applications; development of software; sale of artificial intelligence public data platforms; sale of office intelligence hardware; sale of office consumables; sale of electrical measuring equipment; repair of specialized equipment; sale of export and import goods; sale of medical equipment; sale of plastic (ii) licensing of projects (in addition to those subject to legal authorization, the operation of which is carried out on an autonomous basis under a licence): construction work. (a project subject to approval by law may only be carried out with the approval of the relevant department, depending on the documents or licences approved by the relevant department) (no activity shall be carried out in the category of projects prohibited and restricted by the state and municipal industrial policy