The fresh air system mainly uses high air pressure and large axial or centrifugal fans, relying on mechanical force to supply fresh air from outside into indoor room. Meanwhile,the indoor air will be filtered, oxygenated, disinfected and sterilized to achieve the purpose of air purification and high-quality fresh air demand.

　　Yueqiu outer rotor centrifugal fan (AC/DC/EC series) products have the advantage of compact structure, small space occupation, low noise and high efficiency . These products can meet the ventilation needs of office buildings, hotels, swimming pools, hospitals, large conference halls and shopping malls etc.