The registered address of hebei saint-dey gate and window limited is located in si-u village, north han township, nun-chou city, with the registration authority being the market supervision authority of the city, represented by the legal person li changjiang, and operating in the areas of production, sale, maintenance and installation of fire doors, fireproof windows, fireproof doors, blinds, smokeproof walls, fireproof curtain doors, soundproof doors, three defensive doors, industrial doors, fire-fighting equipment, aluminium alloy windows. (projects subject to legal approval may not operate without the approval of the relevant department)