... preservation 3)it has various usage EPS/XPS Sandwich Board EPS/XPS Sandwich BoardSpecifications:(1)Core Material: Rock Wool, EPS, PU; Surface Materials: Galvanized ... ,residentid quarters,school,hospital,etc. Characteristics:1) With deadweight light, a giraffe fitting and random incise characteristic, the fitting ... and springiness designs according to clients' requirements. MgO EPS/XPS Sandwich Board