... SANDWICH PANEL Fire protection 3Sound Insulation, Sandwich panelComposition: MgO panel + EPS or XPS panelSize: 1220mm*2440mm, 1220*2950mmThickness: 40mm, 50mm, ... , it consists of steel plate at both side and polystyrene sandwiched. They are bonded with high intension adhesive at ... of sandwich panels, both for walls and roofs, including: EPS sandwich panel series, rock wool sandwich panel series, glass ...