acoustic gypsum board.size: 1220*2440mm,1200*2400mm,1200*2500mm, 1200*3000mm,1200*3600mm,1800/2400/2700/3000x900x12.5m acoustic gypsum boardsize ... ratio: 3% Description or definition: Vanjoin Gypsum board material is widely used in home decoration andceilings ... Plaster board is divided into ordinary, fire-resistant, water-resistant, and several other varieties acoustic gypsum board