Material: Calcium silicate inorganic composite Features: 1) High sound-absorbent ability 2) Environmental friendly 3) Energy saving 4) Dimensional stability 5) Radiation-proof 6) Static-free 7) Flame retardant 8) Moistureproof, high mold resistance Description: Square-hole pattern, fashionable and elegant style. Based on resonance and friction sound absorbent theories, we added a layer of inorganic fiber inside the compound board to form multiple sound-absorbent spaces. The product is in high sound-absorbent quality, which enabled the effect of sound-reverberation control, echo elimination and sound purification. It is widely used as an ideal noise-reduction material with humidity-control and flame retardant functions, which was used for indoor wall and ceiling, such as Meeting room, Theater, Hospital, exhibition hall, TV station, etc. Customized design is welcomed with customer's demands.