1. Alfa Laval AB
2. Babcock & Wilcox Enterprises Inc.
3. Beltran Technologies Inc.
4. CECO Environmental Corp.
5. Croll Reynolds Inc.
6. Duke Energy Corporation
7. Evoqua Water Technologies LLC
8. Fuji Electric Co. Ltd.
9. GEA Group AG
10. Hamon Corporation
11. Nederman Holding
12. Pacific Green Technologies Group
13. Pollution Systems
14. Valmet Oyj
15. Verantis Corporation
16. W?rtsil? Corporation
17. Yara Marine Technologies AS