... sandwich wall panel 1, Excellent price and quality 2, Light weight 3, Easy installation 4, ISO90 EPS concrete sandwich wall panelProduct ... Roof panel: 950mm 980mmLengthAccording to customer' s requestmaterialsPolystyrene foam board(EPS), Color steel sheet,Rock woolStructureUpper and lower layer: Color steel sheetMiddle: ... storages, exhibition halls, gymnasiums etc. EPS concrete sandwich wall panel