1. AECOM
2. Andritz AG
3. Babcock & Wilcox Enterprises Inc.
4. Burns & McDonnell
5. Chiyoda Corporation
6. Doosan Lentjes GmbH
7. FLSmidth & Co.
8. General Electric Company
9. Kawasaki Heavy Industries Ltd.
10. LAB S.A.
11. Macrotek Inc.
12. Mitsubishi Heavy Industries Ltd.
13. Rafako S.A.
14. Steinmuller Engineering GmbH
15. Thermax Ltd.
16. Valmet Corporation