- American Borate
- Asterion, LLC
- Buckman's
- Caremuse Lime Inc.
- Delta Chemical Corp.
- EP Minerals
- Esseco USA
- Global Chemical Resources
- Gulbrandsen Co., Inc.
- Heatbath Corporation
- Hubbard-Hall
- Interstate Chemical Co., Inc.
- K.A. Steel Chemicals Inc.
- Koala Corporation
- Na-churs Alpine Solutions
- Natrium Products Inc.
- Phibrochem
- Puritan Products Inc.
- Purity Zinc
- Reagent Chemical & Research
- Simple Green
- Surpass Chemical Co., Inc.
- U.S. Aluminate Company
- Univertical Chemical Company
- Wego Chemical & Mineral Corp.
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