... Fire protection 3Sound Insulation, Sandwich panelComposition: MgO panel + EPS or XPS panelSize: 1220mm*2440mm, 1220*2950mmThickness: 40mm, 50mm, 60mm, 70mm,80mm ... material, it consists of steel plate at both side and polystyrene sandwiched. They are bonded with high intension adhesive at high ... in your country with our machines. Sandwich panel (MgO + EPS/XPS)