The registration authority is the market supervision authority of the shizumi district of tianjin city, with legal representatives and general projects: sale of metal materials; sale of metal structures; sale of metal products; wholesale distribution of hardware products; sale of plastics; sale of building materials; 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)