... many times over.2. Applying,Nowadays, the EPS sandwich panel is widely used for cleaning workshops, industrial factory buildings, ... Effective widthWall panel: 950mm 1150mm 1000mm 1200mm. Roof panel: 960mm 970mm.Lengthcustomized.MaterialsPolystyrene foam board(EPS), Color steel sheetStructureUpper and lower layer: Color ... , storages, exhibition halls, gymnasiums etc. LAR-W41 sandwich roof panel