1. AB Volvo
2. Alexander Dennis Limited
3. Ashok Leyland Limited
4. Blue Bird Corporation
5. Blue Solutions S.A.S.
6. BYD Company Limited
7. Chariot Motors
8. EBUSCO B.V.
9. Eicher Motors Ltd.
10. Eurabus GmbH
11. GAZ International LLC
12. Irizar Group
13. Isuzu Motors Limited
14. JBM Group
15. Karsan Otomotiv San. ve Tic. A.?.
16. Mercedes-Benz Group AG
17. Olectra Greentech Ltd.
18. Proterra Inc.
19. Quantron AG
20. Rissala Electric Motors Pvt. Ltd
21. Solaris Bus & Coach sp. z o.o
22. Tata Motors Limited
23. The Lion Electric Company
24. TRATON SE
25. VDL Groep B.V.
26. Volgren by Marcopolo S.A.
27. WrightBus
28. Xiamen King Long International Trading Co.Ltd.
29. Zhengzhou Yutong Bus Co. Ltd.
30. Zhongtong Bus Holding Co. Ltd.