The registration address of the hao-chou gate and window factory is located in lii zhang village, north han village, nin-chou city, and is 100 metres north of the war track and light road. The registration authority is the market supervisory authority, with the legal personality representing the city and covering general projects: manufacturing and processing of doors and windows; construction of metal doors and windows; sale of doors and windows; retail sale of hardware products; and sale of metal products. In addition to projects subject to authorization under the law, activities are carried out autonomously in accordance with the law and in accordance with the operating licence)。