1. Air Clean USA
LLC
2. APC Technologies
3. Babcock & Wilcox Enterprises Inc.
4. BASF SE
5. CECO Environmental Corp.
6. Cummins Inc.
7. Ducon Environmental Systems Inc.
8. Durr Systems Inc.
9. Fujian Longking Co. Ltd.
10. General Electric Company
11. Hamon Group
12. John Wood Group PLC
13. Johnson Matthey PLC
14. Mitsubishi Heavy Industries
Ltd.
15. Thermax Limited