TULSA, OK--(Marketwire - 06/01/11) - AAON, INC. (NASDAQ: AAON - News ), a leading manufacturer of heating and cooling products, announces that its RQ Series High Efficiency Rooftop Unit has been recognized as the 2011 Product of the Year in the Large company category from the National Society of Professional Engineers (NSPE). "Celebrating its 28th year, the prestigious New Product Award ...
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