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    Vertical Axis Wind Turbine VAWT Chava Wind Hagen Ruff - www.chavawind.com
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    Vertical Axis Wind Turbine VAWT Chava Wind Hagen Ruff - www.chavawind.com

    See the most innovative Vertical Axis Wind Turbine (VAWT) of its class. 25KW at 11m/s. Presented by Hagen Ruff and the Chava Wind team.
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