1. American Steam Control
2. Caleffi S.p.a.
3. Danfoss A/S
4. Fratelli Pettinaroli S.p.A.
5. GIACOMINI S.p.A.
6. Grundfos Pumps India Private Ltd.
7. Herz Armaturen GmbH
8. Honeywell International Inc.
9. I.V.A.R. S.p.a.
10. IMI Hydronic Engineering International SA
11. Jurgen Schlosser Armaturen GmbH
12. Myson
13. Ningbo Acro Fluid Control Co. Ltd.
14. Oventrop GmbH & Co. KG
15. Purmo Group PLC
16. Resideo Technologies Inc.
17. Schneider Electric SE
18. Siemens AG
19. Taizhou Xunzhi Metal Products Co. Ltd.
20. Vaillant Group
21. West Radiators
22. Zhejiang Hualong Valves Co. Ltd.
23. Zhejiang Huibo Valve Technology Co. Ltd.