... for loading. Company information:Foshan Nanhai Bosen Building Material Co., Ltd. was established in 2008, and is a professional company ... :Main Steel: Q345B,Q235BColumn&Beam: Welded or Hot rolled H-sectionWall&Roof: EPS, Rockwall, PU sandwich ,corrugated steel sheetDoor ... good. Steel structure housing construction greatly reduces the sand, stone, the dosage of the ash, used materials mainly green, ...