- Albemarle Corporation
- Axens
- BASF SE
- Chevron Corporation
- Clariant
- Royal Dutch Shell plc
- DuPont
- Evonik Industries AG
- Exxon Mobil Corporation
- Haldor Topsoe A/S
- Honeywell International Inc
- JGC C & C
- Johnson Matthey
- China Petroleum & Chemical Corporation
- W. R. Grace & Co.-Conn.