... Magnesium sandwich panel It is widely used in: Indoor and outdoor boards for purifying factory building, combined house and indoor partition with ... 50,75,100,150,200mm)3. Usage: Interior and exterior partition on steel or concrete structure building, For new construction, additions ... of the brick buildingWaterproof and damp resistant,With fireproof feature Magnesium Oxide/MgO board,MgO sandwich panel