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Lightweight, compact ring-turbine -- Can even be installed on small buildings #DigInfo

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Published on Oct 7, 2013

Lightweight, compact ring-turbine -- Can even be installed on small buildings
http://www.indiegogo.com/projects/hig...

(http://www.diginfo.tv/v/13-0080-f-en.php)

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Peace Frontier
Ring-style wind-generater

DigInfo TV - http://www.diginfo.tv

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