The registration address of the northern river industry welding materials ltd. Is located at no. 16, maljong, south palace city, hebei province. The registration authority is the south palace city market supervisory authority, represented by the legal person ma ying fei, and covers the production and sale of grinding materials, welding bars, weldings, non-ferrous metals and iron alloys; import and export operations of self-employed products (projects subject to authorization by law and prior to the commencement of operations) ***