... insulation, save 15%~30% construction cost. Magnesium oxide board is a new fireproof decorative material, has features of ... 5. Edge pattern: Square, taperedDrywallFiber cement board (calcium silicate board)Magnesium oxide board (MgO board)1) 15mm fireproof drywall reaches Grade ... in conjunction with various decoration layers such as wood, PVC, melamine, brick, stone, aluminium foil, etc.5) Weight is ...