... 2, Light weight 3, Easy installation 4, ISO90 Foam sandwich panelProduct DescriptionHeat Insulation / Inflaming RetardingThickness: 50mm-200mmWidth: ... Roof panel: 950mm 980mmLengthAccording to customer' s requestmaterialsPolystyrene foam board(EPS), Color steel sheet,Rock woolStructureUpper and ... roofs and walls referring to the large size factory buildings, storages, exhibition halls, gymnasiums etc ...