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Lone Star Technologies, Inc. is a management and holding company with six principal subsidiaries, Lone Star Steel Company (Steel), Fintube Technologies, Inc. (Fintube), Bellville Tube Company, L.P. (Bellville), Wheeling Machine Products, Inc. and
Refri-Ozone Inc is a Granby, QC-based company in the Manufacturing sector.
Huff Co Inc is a Lake Bluff, IL-based company in the Manufacturing sector.
Interstate Industrial Instrumentation Inc is a Omaha, NE-based company in the Manufacturing sector.
Reynolds Services Inc is a Greenville, PA-based company in the Manufacturing sector.