(a) the registration address of shandong yusei steel co. Ltd. Is located at no. 21-1 of zhongtung city, zhongtung street, zhongshan province, on the economic technology development district of shandong province. The registration authority is known as the market supervision authority of the city economic technology development zone, which is represented by legal persons and operates on general items: sale of metal materials; sale of special equipment; wholesale distribution of hardware products; sale of hydraulic machinery and components; sale of ballast machinery and components; sale of electrical equipment