... beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel plateSandwich panel materialsEPS, polyurethane, rock wool, glass ... ProductSteel Structure,Space Frame,Prefabricated House,Steel TowerProduction Lines9 production lines of light steel,heavy steel,space frame and tube truss ... . 5 production lines of color steel plate,curtain ...