... white pine fiber plus anti-corrosion, moisture-proof bond, then after degreasing, fumigation, mineralized and mixed with 35% portland cement composition to ... ,meeting room, hotel, ktv,etc. CHARACTERRISTIC A>material:65% pine fiber and 35% mineral binder B>NRC:0.80 C>Flammability ... applied, for multiple spray color, and color variety. pure wood fiber,cement woodwool soundproof ceiling wall decorative