Frp and polyurethane foam sandwich panels 1, Excellent price and quality 2, Light weight 3, Easy installation 4, ISO90 sandwich ... steel sheet: 0.3-0.6mm Polystyrene foam board: 50mm 75mm 100mm 150mm 200mmdensityRock wool 120-250kg/m3,EPS 12-35kg/m3 ... Detailed parameters: 1. Composition: Core materials: EPS, XPS,Rok wool, Glass wool,PU, PUR Surface materials: PPGI, GI, Stainless steel sheet, ...