The valve pad generally has a durable high elasticity, good shock isolation, shock isolation and sound insulation performance, convenient modeling and pressing, and can freely choose the shape and size to meet the requirements of stiffness and strength; The damping performance can absorb mechanical energy, especially the absorption of high-frequency vibration energy; Because the material and metal surface can be firmly bonded, it is not only easy to manufacture and install, but also can use multi-layer superposition to reduce the stiffness and change its frequency range. The price is low. XHS fan coil unit pneumatic ball valve, fan coil valve hook, fan coil unit is common when we do projects. In order not to disturb people's rest, Generally, pneumatic ball valves are installed at the time of decoration. Fan coil units are installed in offices or bedrooms with relatively small space. Even small noise and vibration will directly affect the environmental quality of residents