... contract,fabricate and design for steel structure plant, workshop,warehouse,steel structure office building, prefabricated house,steel structure bridge and dock ... provide and processing PU sandwich board, steel roof tile,EPS panel, H-beam,Z-beam,steel column, girder and purlin etc. If ... snow load, etc 4.Insulation material :sandwich panel or steel sheet5.Crane beam: do you need crane beam inside the ...