1. ABB Ltd
2. Baxi International
3. Burnham Commercial
LLC
4. HBX Control Systems Inc.
5. Honeywell International Inc.
6. Lochinvar by A.O. Smith
7. Micromod Automation
8. Robert Bosch GmbH
9. Rockwell Automation
10. Schneider Electric SE
11. Siemens AG
12. Spirax-Sarco Engineering PLC
13. The Fulton Companies
14. Weil-McLain
15. Yokogawa Electric Corporation