Beijing hong yunsheng smart industry ltd. Is registered at no. 610 in ma jibong quan village, changping district, beijing. The registration authority is the market supervision authority of changping district, beijing. The legal entity is represented by liu fuxun and operates on general projects such as sales of doors and windows; manufacturing of doors and windows; construction of metal doors and windows; repair of metal products; technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; sale of mechanical equipment; and rental of mechanical equipment. (except for projects subject to legal authorization, operating independently of the law by means of a business licence) (no activity shall be carried out in which the state and municipal industrial policy prohibits and restricts the operation of such projects