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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
Wuhan Goldenlaser Co. is a China, ME-based company in the Manufacturing sector.
Mersen is a Newburyport, MA-based company in the Manufacturing sector.
Tioga Pipe Supply Co. is a Philadelphia, PA-based company in the Manufacturing sector.
Process Engineering and Equip Co is a Comstock Park, MI-based company in the Manufacturing sector.