Mineral fiber boards: 1,CE&ISO certified quality 2,95%RH to moisture resistant 3,0.55=NRC noise control Mineral Fiber Board with CE Certification:1. Types:·little-stars series flowers·lovely-worms series flowers·convex-sprinkling series ·different shape boards2. Standard size:300×300mm, 300×600mm, 300×1200mm, 595x595mm, 603x603mm, 600×1200mm3. Thickness: 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, 4. ...