| Subsidiary | State of Organization | |||||||
| Stauber Holdings, Inc. | Minnesota | |||||||
| Stauber Performance Ingredients, Inc., a subsidiary of Stauber Holdings, Inc. | Minnesota | |||||||
| Water Solutions Unlimited Inc. | Minnesota | |||||||
| Superior Imports LLC | Minnesota | |||||||
| Preferred Ingredients LLC | Minnesota | |||||||
| Waterguard, Inc. | Minnesota | |||||||
| Amerochem Corporation | Minnesota | |||||||