Our company provides interior decorative material of high quality such as mineral fiber board, ceiling and suspension system grid. Please let us know if you are interested. Features: 1) Fire Performance: Meets GB8624-1997B1 Standards 2) Asbestos Free 3) Formaldehyde Free 4) Product Content: Mineral Fiber 5) Color of Surface: White 6) Noise Reduction Coefficient: Nrc 0.4 - 0.6 Depending On The Pattern And The Thickness 7) Light Reflectivity: More Than 85% Quality Certificate: ISO9001:2000, CE Certificate Specification: Standard Thickness: 8-20mm Standard Dimensions: 300x600,600x600,300x1200,600x1200,600x1800mm