1)sound insulation,heat-insulation,moistureproof.Low weight,high invention 2)competitive price 1)Raw materialsgypsum powder,gypsum retaining paper,fiber(wood fiber,paper fiber,fiber glass),cornstarch,vesicant,lightweight aggregate,citric acid,water,adhesive,etc. 2)Product Description(size and thickness)Normal size: 2440x1220mm, 2400x1200mm 3600*1200,3000*1200,1830*1220.Normal thickness scope:7.0, ...