Theglass woolceiling& fiberglass ceiling boardsare manufactured from high density fiberglass wool. The visible face has a decorative fiberglass tissue and the back of the tile is covered with normal tissue. The fiberglass/glass woolceiling board's character are sound absorbent, fireproof , heat insulation and dampproof . They are widely used for building decoration according to special requirements for acoustic. Product Performance: sound absorption coefficient ≥0.85 flame retardancy stage B1 moisture content :0.1% dampproof :0.5mm thickness:15mm ,20mm ,25mm