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Tunnel construction fan （Double-stage single-speed series）
¥30,000.00
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1. High air volume
2. The two impellers rotate relative to each other, and the pressure is three times that of the single-stage impellers
3. Using soft start control, the impact on the power grid is small, and the motor is fully protected
4. The import and export adopt noise reduction device, low noise
5. Meet the ventilation requirements of tunnels below 2000 meters