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Large fan ( Tunnel) The light coupling selection

by:Tranch      2020-07-04
Have a call in the design of tunnel ventilation design, the average of more than 1000 meters long tunnel to adopt mechanical ventilation, in the tunnel, we call it a axial fan, used to accelerate the air circulation, update the air inside the tunnel, it can make the inside of the tunnel in automobile exhaust dilution, reduce air pollution, and breathable. Large fan ( Tunnel with) Optical coupling small make up recommend EL817 & amp; ELM453
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