1. BorgWarner Inc.
2. Cambustion Ltd.
3. Compagnie de Saint-Gobain S.A.
4. Cummins Inc.
5. Denso Corporation
6. Ebersp?cher Gruppe GmbH & Co. KG
7. Gits Manufacturing Co. by Centromotion
8. Hella GmbH & Co. KGaA by Faurecia
9. Klubert + Schmidt GmbH
10. Mahle GmbH
11. Mitsubishi Electric Corporation
12. Rheinmetall AG
13. Tenneco Inc.
14. Valeo
15. Zhejiang Yinlun Machinery Co. Ltd.