The registration address of huan jinh metal materials ltd. In tianjin city is in room 7470, business centre no. 88, high-end equipment manufacturing industrial park, north tianjin province, north tianjin city, with the registration authority of the north fat district market supervisory authority of tianjin city, which includes general items: sale of metal materials; sale of metal structures; sale of construction materials; sale of metal ore; electrical and cable operations; wholesale distribution of hardware products; sale of instrument instruments; sale of chemical products (excluding licensed chemical products); import and export of goods. (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)