1.low noise 2.high efficiency 3energy saving blower machine 4high rising pressure pump 5.stable operation, long life span 1. Low noise, due to the helical suction and discharge, the blower air flow in and out according to the direction of spiral line, all these prevent the pulse noise and vibration. What's more, by using the Impedance complex muffler, the noise of our blowers are further reduced. ...