... Water Proof 2Heat Preservation 3Sound Insulation, 4 Fireproof Sandwich panelComposition: MgO panel + EPS or XPS panelSize: ... 40mm, 50mm, 60mm, 70mm,80mm,90mmmADVANTAGES:1Sandwich Wall Panel2Light Weight,Sound Insulation3Heat Insulation,Preservation4Fire,Water Proof5 Easy ... supply kinds of sandwich panels, both for walls and roofs, including: EPS sandwich panel series, rock wool sandwich panel series, ...