 NORWALK, Conn.--BUSINESS WIRE--EMCOR Group, Inc. NYSE: EME, a Fortune 500 leader in mechanical and electrical construction, industrial and energy infrastructure, and building services for a diverse range of businesses, announced that it has completed its acquisition of Quebe Holdings, Inc., Quebe headquartered in Dayton, Ohio. Quebe is a leading electrical services company providing preconstruction, construction, systems integration, and energy solutions in a variety of markets, includ 