acoustic mineral wool board sag resistance high &low density environmental friendly ISO9001:2000 ISO14001:2004 CE Acoustic Mineral Wool Board/mineral wool board/mineral fiber board/mineral wool ceiling boardDetailed Specification:TypeFine fissured, pin hole, sandy with hole and different shape boardsStandard Size600*600mm,300*600mm,600*1200mm,300*1200mm,300*300mmThickness12mm,13mm,14mm,15mm,16mm, ...