American Engineering Svc., Inc.

Ashland Chemical Co.

Bio-Chem Assoc., Inc.

Horner Discus Int'l. Inc.

Krevco

Mid South Chemical Co., Inc.

Professional Water Tech., Inc.

Ques Ind. Inc.

Safe Water Tech., Inc.

Southeastern Filtration & Equip. Sys.

Spectrum Labs, Inc.

Technical Prod. Corp.

Watcon, Inc.

Western Water Prod., Inc.