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Tunnel construction fan （Frequency conversion speed control series）
¥180,000.00
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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.Inverter control, according to the change of tunneling depth from 30-50HZ to adjust, save electricity
4.Adopt four section silencing device, low noise
5.Single-head air supply 1000m -5000 m