mineral wool acoustic board square,tegular edge soud absorption,fireproof 600*600,600*1200mm ISO14001:2004 ISO9001:2008 CE Our mineral wool acoustic board has the following outstanding features: Stylelittle-star series,lovely-worms series,sand-surface,pin holesStandard Size300*300,300*600,300*1200,600*600,600*1200mm(or according to your requirement)Thickness12mm,14mm,15mm,16mm,8mm,20mm, ...