... , Light weight 3, Easy installation 4, ISO90 EPS concrete sandwich wall panelProduct DescriptionHeat Insulation / Inflaming RetardingThickness: 50mm-200mmWidth ... s requestmaterialsPolystyrene foam board(EPS), Color steel sheet,Rock woolStructureUpper and lower layer: Color steel sheetMiddle: polystyrene foam board ... , storages, exhibition halls, gymnasiums etc. EPS concrete sandwich wall panel