Cross flow blower in china are generally ventilated and ventilated fans (usually small and medium-sized centrifugal and axial fans) are the most widely used, have the most demand, and have the most manufacturers. Generally speaking, the supply of such products exceeds the demand. Although the demand for special-purpose fans (including anti-corrosion fans, high-temperature fans, wear-resistant fans, fire-fighting smoke exhaust fans, etc.) is not large, due to the special operating environment, they need to be treated differently, because the main material requirements are special.

　　The biggest feature of the cross-flow fan Roots blower in China is that when the pressure is adjusted within the allowable range, the flow rate changes very little, the pressure selection range is wide, and it has the characteristics of forced gas transmission. The main disadvantage is that the noise is large.

　　Through the introduction of technology, joint ventures and self-development of cross-flow fan Roots blowers in China, my country has launched three-leaf Roots blowers with low noise, which are very popular among users and have a good market prospect.

　　Turbocompressors (including centrifugal compressors, axial flow compressors and axial flow-centrifugal composite compressors) are important equipment for complete sets of major projects and play an important role in the national economy. The performance requirements of the Cross flow blower in china for the turbo compressor are both high pressure and large flow.