The registered address of beijing zhengyang construction engineering ltd. Is located on the first floor, no. 101-a361 (cluster registration), located on the 1st floor, no. 1 of wangyang road, beijing city house hills. The registration authority is the market supervision authority for beijing house mountain, represented by the legal person wang zheng an, and is run by the general contract for construction; professional contracting; subcontracting of labour; sale of doors, windows, hardware, office supplies, building materials, fire-fighting materials, decoration materials, metal materials, metal products, plastics, glass products, fire-fighting equipment, ceramics, automation equipment, mechanical and electrical equipment, sanitary items; home decoration and design; installation of doors and windows; and maintenance of mechanical and electrical equipment. (the subjects of the market may, in accordance with the law, freely choose to operate the project and carry out the activity; the construction contract, the professional contract and the project subject to legal approval, which shall be carried out on the basis of the approved content, with the approval of the relevant sector; and may not engage in the activity of the state or municipal industrial policy prohibiting or restricting the operation of the project