Calcium silicate composite glass wool is a new composite material. This board can be directly attached to the wall, and the construction is very convenient. And calcium silicate board and glass wool are both fireproof materials, they are suitable for interior decoration. Perforated boards, whether calcium silicate or mineral wool boards, can be used in machine rooms for sound absorption and noise reduction.   1. Material: torbe mullite crystal, cement, quartz sand, cellulose fiber; 2. Surface coating: acrylic latex paint; 3. Fire protection: non-combustible Class A; 4. Capacity: 1.20-1.40g/cm3; 5. Factory moisture content: <10%; 6. Thermal conductivity: average 0.22W/MK.               Ceilings for offices, conference rooms, auditoriums, restaurants, hotels, homes, etc.