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-intell...