1. AS Labruna
2. ASNU Corporation
3. BorgWarner Inc.
4. Caterpillar Inc.
5. Central Diesel Inc.
6. Cummins Inc.
7. Denso Corporation
8. DUAP AG
9. Edelbrock
LLC
10. FiTech Fuel Injection
11. Fuel Air Spark Technology
12. General Motor
13. Heinzmann GmbH & Co. KG
14. Holley Performance Products Inc.
15. Liebherr International AG.
16. Liuzhou YuanChuang EFI Technology Co. Ltd.
17. MAN SE
18. Mercury Marine by Brunswick Corporation
19. O.M.T. Officine Meccaniche Torino
20. Robert Bosch GmbH
21. Rolls-Royce PLC
22. Ruian Haoyu Auto Parts Co. Ltd.
23. Twinco Pte. Ltd.
24. Woodward Inc.
25. Yanmar Co. Ltd.