This series of fans is a new type of selected engineering ventilator. It is characterized by high efficiency, low energy, and low noise. It is suitable for the ventilation of large, medium, and small tunnels. It can also be applied to infrastructure construction such as rivers, water conservancy, railways, subways, and civil air defense. The fan consumes less energy, has low noise, is easy to maintain, is light, and is the preferred fan for ventilation, such as tunnel construction.

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