Features: 1) Material: Mineral fiber acoustic ceiling board 2) Surface: A variety of surface patterns available 3) Coating: PVDA 4) Color: white 5) Density: 350-420kg/m 6) Fiber content: >=90% 7) Fire performance: Meet JC/T670-2005 8) Fracture load by bending (N):>250N 9) Damping index: 3.0 10) Noise reduction coefficient: NRC 0.35 - 0.6 depending _disibledevent=85% 12) No Asbestos 13) No Formaldehyde 14) Dimensions: 600 x 600mm, 600 x 1200mm 15) Thickness: 7.5mm, 8mm, 9mm, 10mm, 12mm, 14mm, 15mm, 18mm