With the growth of demand for sewage treatment and the development of chemical, metallurgical and other industries, the market demand for offshore fans in China continues to rise. In the past five years, the output of wind turbines in China has also increased, from 3700 in 2017 to 11000 in 2021. With the increase of the output of Li Fan, its output value also increased, from 3700 units in 2017 to 11000 units. With the increase of the output of centrifugal blower, its output value also increased, from 1.2 billion yuan in 2017 to 4.6 billion yuan in 2021.Fan is a kind of machinery mainly used for pumping, conveying and improving fluid energy. It is mainly used in ventilation of mines, underground projects, underground power plants, boiler ventilation and air induction; Emission of high temperature corrosive gases from chemical plants; Workshop air conditioning and ventilation of atomic protection equipment. Fans are widely used. In short, they are mainly used to assist full combustion, ventilation and transportation, and almost involve all fields of the national economy

   Centrifugal blowers are widely used. Driven by the development of environmental protection industry, the application demand of centrifugal blowers continues to rise, and the output increases steadily. There are multiple types of centrifugal blowers. Magnetic levitation centrifugal blowers have great potential for development in the future, attracting the layout of many enterprises.