The registered address of shun zhenjin city and source trading limited is located at no. 12, ye hong kong industrial district of tianjin. The registration authority is the market supervisory authority of zinnan district of tianjin city, represented by wang qing, and operates in the areas of steel, construction materials, mechanical equipment, environmental equipment, hardware, needle textiles, electronic precision parts, clothing, wholesale and retail distribution and retail distribution of daily department goods, iron products. (specific regulations for state-owned specialty)