... core material kinds, the sandwich panel includes in Polyurethane(PU), polystyrene(EPS) and rock wool or glass wool sandwich panel, the up ... and bottom layer: Uses many kinds of metal sheetsB) Middle: EPS board, PU board, rock wool2) Width: 950mm, 1000mm, 1150mm. 1200mm3 ... .6mm5) Length: Depending on the design and conditions of transportation Eps sandwich panel