The registration address of the department of wholesale and entire solids of the yongyan district is located at 11th row 14 of the west side of the city of yening city, with the registering authority being the market supervision authority of the youngyon district, representing kang yuen and covering general projects: sale of fast-fixed items; sale of metal products; sale of metal materials; sale of metal chains and other metal products; wholesale of hardware products; sale of construction materials; sale of mechanical parts, parts and components; sale of electrical equipment; sale of metal structures; sale of axle bearings, gears and moving parts; sale of metal parts for construction; sale of rubber 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)。