The sound insulation board is a cement plate with a porous composite profile. Its cross section is square shape. The waterproof sound absorbing material is filled in the porous cement plate of the composite profile, and a sound absorption hole is worn on the side plate of the sound absorbing plate. The opening rate is 15-30%. The beneficial effect is the high compactness, high hardness and high hole rate of the sound insulation board, excellent bending and impact resistance. And because of the holes, the weight of the plate is reduced, and the light weight and high strength are realized, and the sound insulation amount of STC is 40dB. It is easy to install, and the construction is not restricted by climate.            

It can be used as an outdoor building as well as an interior decoration for the purpose of beauty and noise reduction. It is suitable for the traffic field of express road, light rail, railway, culvert, tunnel, and other fields of industry, factory, workshop, theater and residential district. Acid and alkali corrosion resistance is good, decoration spray is optional, and the cost is low.