?- Albemarle Corporation
- Baker Hughes Incorporated
- BASF SE
- BWA WATER ADDITIVES
- Dow
- Ecolab
- Kemira
- Kemipex
- Lonza
- Merck KGaA
- Nouryon
- Solvay
- SUEZ
- Thor
- The Lubrizol Corporation
- Troy Corporation
- Valtris Specialty Chemicals
- Veolia Environnement SA