Standard size: 300x600mm, 595x595mm, 603x603mm,600x1200mm Thickness size : Thickness: 10mm, 12mm, 14mm, 15mm, 18mm, 20mm, 21mm, 22mm Different dimensions can be made as required Quality Certificate: ISO9001:2000, ISO14001:2004, CE Certificate Features: 1) Material: Mineral wool acoustic ceiling board 2) Surface: A variety of surface patterns available 3) Coating: PVDA 4) Color: white 5) Density: 321kg/m3 6) Fiber content: >=90% 7) Fire performance: Meet JC/T670-2005 8) Fracture load by bending (N) : 192N 600x600x12mm） 9) Damping index: 2.7 (RH90%?3%,TEMPERATURE 10) Noise reduction coefficient: NRC 0.35 - 0.6 depending on the pattern and the thickness 11) Light reflectivity: >=85% 12) No Asbestos