The registration address of wan jia-tianjin is located in building 4 no. 4 of the north kao-chat building in north tianjin city, with legal persons representing dhuong-min; general projects: sale of metal materials; sale of non-ferrous metal alloys; sale of metal products; sale of metal structures; sale of metal ores; sale of metal wire and its products; sale of construction materials; sale of mechanical equipment; sale of mechanical and electrical equipment; sale of electrical auxiliary items; sale of fire-fighting equipment; sale of moulds; sale of instrument instruments; sale of electronic products; sale of electrical equipment; sale of rubber products; sale of metal packagings and materials; and sale of the internet (except for the sale of goods for which permission is required). (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)