HETSCO Inc. repairs and modifies industrial cryogenic plant equipment, with emphasis on brazed aluminum heat exchangers. It was founded in 1982 as a specialty welding repair service company. Located in Greenwood, Ind., the company offers fabrication, construction and exchange repair services to its clients. HETSCO Inc. averages over $14 million in sales annually. It has earned the Certificate of Authorization from the National Board of Boiler and Pressure Vessel Inspectors. The company's clients include Accroven, Air Gas, Air Liquide, Air Products, BCCK Engineering, C&S Machine Inc, ConocoPhillips, Crosstex Energy, Dakota Gasification, El Dorado Chemical, El Paso Field Service, Emirates Industrial, Mixing & Mass Transfer Technologies, Metro Waste Water and Northstar Industries.