... strength, no-ignitable,no-mouldy ,moistureproof,ventilate,sound absorption and noise reduction, So it can be used as the facing ... wall,ceiling. Covering rock wool ,mineral wool and glass wool, guarantee sound absorption effect and air permeability of wool board.Character : 1) ... 2)no-ignitable,no-mouldy,waterproof 3)sound absorption and noise reductionApplication: 1)ceiling facing 2)wall facing