1. AGICO Group
2. Anyang General International Co. Ltd.
3. ArcelorMittal
4. Atlantic Track & Turnout Co.
5. Australian Railway Supply Company Pty Ltd.
6. Bossard Group
7. Brainard Rivet Company
8. Cooper & Turner Ltd.
9. Hamidi Exports
10. Harmer Steel Products Company
11. Hebei Yixin Fastener Co. Ltd.
12. Kunshan Alex Railway Fastening Co. Ltd.
13. Master Bolt
LLC
14. MNP Corporation
15. Pandrol
16. Pankaj International
17. Patel Engineeriners
18. Progress Rail by Caterpillar Inc.
19. SEKIGAHARA SEISAKUSHO Ltd.
20. Tohoku bolt MFG Co. Ltd.
21. Voestalpine Railway Systems GmbH
22. Vossloh AG
23. Wilson & Company Inc.