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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
Filtervac International Inc is a Breslau, ON-based company in the Manufacturing sector.
D P Systems LLC is a Addison, IL-based company in the Manufacturing sector.
BCS Machine Co Inc is a Sykesville, MD-based company in the Manufacturing sector.
Allied Fabricators is a Paris, ON-based company in the Manufacturing sector.