... light weight 3.anti-corrosion and bending 4.lower cost EPS Sandwich Panel uses colour coating steel sheet as ... of small weight(1/20---1/30 of concrete roof), heat preservation, heat insulation(its heat conduction ... ,820mm,840mm,880mm,900mm,950mm,980mm,1150mmThickness of EPS 50mm,75mm,100mmSteel sheet thickness 0.18mm-0 ... to install, large usage Welcome your enquiry ! Lower price EPS sanwich roof panels