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ILSCO was established in 1894 as the Incandescent Light and Stove Company by tinsmith and inventor Joseph Stubbers. In its first 15 years, Stubber's company sold 85000 gas systems in the U.S. and abroad.
Carter Air Balance Co. is a Napa, CA-based company in the Energy and Utilities sector.
AZZ Central Electric Manufacturing Company is a Fulton, MO-based company in the Energy and Utilities sector.
Energy 1 Corporation is a Southfield, MI-based company in the Energy and Utilities sector.
Foothill Air Conditioning is a Los Gatos, CA-based company in the Energy and Utilities sector.