- Ashland
- Croda International PLC
- BASF SE
- Lonza
- Evonik Industries AG
- Solvay
- Dow
- Nouryon
- Clariant
- Wacker Chemie AG
- Innospec
- Stepan Company
- Merck KGaA
- Huntsman International LLC
- Corbion
- The Lubrizol Corporation
- Galaxy Surfactants Ltd
- Sasol