... Excellent sound inslulation, 4) Fireproof 5) Last for long time, 6) Pollution free products, 7) Good ... assurance2,economic and cost saving for construction on whole process3.save time and fast ... a special slop,then add the aluminum dust and the additive.Make the aluminum dust and the special slop have a ... will bacome the light brick,the porous rate is 70-80%. 3. ADVANTAGES AAC block density is usually 400 ...