... muffler, the noise of our blowers are further reduced.2. High volume and anti-heat efficiency, so it is energy-saving. The ... curve, the meshing is more reasonable, and further increases the volume efficiency.3. Stable performance. The blower rotor, casing, wall ... . Therefore, the blowers are almost no vibration.5. With high precise and hardness Synchronization gear, we not only extension blowers ...