mineral fiber ceiling panels 1) nice-looking 2) sound absorption 3) fire-resistant, heat-insulation, environmental protection Specification: SizeThicknessEdgePackge595*595mm603*603mm603*1212mm595*1195mm6mm 10mm11mm 20mmTegularSquareCardboard BoxFeatures: Material: Wet Formed Mineral fiber sound insulation Surface Lovely worm, little star Color White Density 280-420kg/m³ Fiber content: ≥90% Fire performance: Meet CNS6532 Class 1 Product content: Mineral fiber Thermal conductivity: ≤0. 065w/mk Bending strength: >250N Acoustic coefficient: 0.4 - 0.6 (Noise reduction coefficient: NRC 0. 4 - 0. 6 depending on the pattern and the thickness) Water content: ≤3% Light reflectivity: ≥85% Mold resistance No Asbestos No Formaldehyde