- AB Specialty Silicones
- Bellofram Group of Companies
- Chemsil Silicones Inc.
- CHT Germany GmbH
- Dow
- Elkay Chemicals Pvt Ltd
- Elkem ASA
- Evonik Industries AG
- Innospec
- K. K. Chempro India Private Limited
- KCC Corporation
- MESGO SpA
- Milliken & Company
- Momentive
- NUSIL
- Reiss Manufacturing Inc.
- Shin-Etsu Chemical Co. Ltd
- Siltech Corporation
- Specialty Silicone Products Inc.
- Supreme Silicones
- The Lubrizol Corporation
- Wacker Chemie AG