Feactures:1) Fire Performance: Meets GB8624-1997B1 Standards 2) Asbestos Free 3) Formaldehyde Free4) Product Content: slag wool 5) Color of Surface: White 6) Noise Reduction Coefficient: Nrc 0.4 - 0.6 Depending On The Pattern And The thickness 7) Relative Humidity: 75%-90% 8) Light Reflectivity: More Than 80% 9) Density of AM Series and DS Series: 300-330kg/m3 10) Density of W Series: 420-450 kg/m3We have the CE Certificate, ISO 9001 Quality control system, ISO 14001 Environmental control system and all kinds of Test Report from our National Research Center