| Name | Title | Contact Details |
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Biotrek Adventure Tours is a Warrenton, VA-based company in the Business Services sector.
USA United Students Assn is a Mansfield, TX-based company in the Business Services sector.
Northbrook Inc is a Aguanga, CA-based company in the Business Services sector.
Envizion Technology is a Stafford, VA-based company in the Business Services sector.
NL Industries, Inc. (NL) is primarily a holding company. The Company operates in the component products industry through its majority owned subsidiary, CompX International Inc. (CompX). NL operates in the chemicals industry through its non-controlling