... 3,EPS Thickness:50-150mmColored Steel EPS Sandwich Roof Panel Detailed Specification: Effective Width960mmMaterial Of InterlayerEPSThickness of EPS interlayer50 ... polystyrene foam, It is a kind of high-strength composited building material, and it was formed in the automated ... Steel EPS Sandwich Roof panels are widely used as roof panel in warehouses, factories, exhibition halls, prefabricated houses, ...