How did the air of vacuum pneumatic butterfly valve come from? I have achieved remarkable results in noise reduction, vibration isolation, vibration pollution control and environmental protection
The damping material coated on the metal structure can effectively suppress the vibration of the structure on the natural frequency, and can greatly reduce the structural noise
If damping materials are applied to the inner walls of passenger cabins of trains, cars and aircraft, it is very useful to reduce noise and improve the environment
