... 1.NEW!!! Light Weight Fireproof Sound Insulation Wall Partition Board 2.Light Weight 3.Heat Preservation 4.CE ... NEW!!! Light Weight Fireproof Sound Insulation Wall Partition BoardBrand: BOYUEJIAComposition: Calcium silicate board(face panel) + Cement ... * (60, 90,120,150,180mm)Usage:Interior and exterior partition on steel or concrete structure building ,for new construction, additions ...