... roof : EPS,PU,PVC or sandwich panelE)It is better for you have the drawings or the pictures4)Load: ... manufacture the steel structure components basis on the design,which includes the frames such as H beam,C ... roof : EPS,PU,PVC or sandwich panelE)It is better for you have the drawings or the pictures4)Load: ... the steel structure components basis on the design,which includes the frames such as H beam,C ...