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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
Summers Manufacturing Company is a Devils Lake, ND-based company in the Manufacturing sector.
HealthQuest Fitness Center is a Napa, CA-based company in the Manufacturing sector.
Tadano America Corp is a Houston, TX-based company in the Manufacturing sector.
Keymark Corporation is a Fonda, NY-based company in the Manufacturing sector.