soundproof material mineral wool acoustic board Raw materials:Perlite,high quality mineral wool,rare earth inorganic composites,composite fiber,nano antibacterial agent, Moisture proof agent,moistureproof glue,high grade latex paint,Specification:Size: 300*600mm,600*600mm,300*1200mm,600*1200mmThickness:6,7,8,9,10,11,12,14,15,16,18,19mmPackage:..