... any of products, please contact us for more information. Tianjin Shangyi Metal Structure Trade Co. Ltd is a leading ... Asia, South America, West Africa, and we are building up rapidly a strong network world wide.Our company ... Rolled Steel Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square/Rectangular Steel Tube ...