- BASF SE
- Cataler Corporation
- CDTi Advanced Materials Inc.
- Clariant
- CRI Catalyst Company
- CORMETECH
- Corning Incorporated
- DCL International Inc.
- Hitachi Zosen Corporation
- Honeywell International Inc.
- IBIDEN Porzellanfabrik Frauenthal
- JGC C&C
- Johnson Matthey
- Umicore