Customized Metal Parts, Welding Parts, Weathering Steel Plate manufacturer / supplier in China, offering High-Quality Prefabricated Light Steel Roof Truss for Industrial Buildings - Customizable Span & Load Capacity, Galvanized Light Steel Structure Roof Truss System Corrosion Resistant Easy Assembly for Warehouse, Prefabricated Light Steel Structure Roof Truss System High Strength Galvanized Steel Building Frame and so on.