1. AB Volvo
2. Alexander Dennis
3. Anhui Ankai Automobile Co. Ltd.
4. ATG AUTOTECHNIK GmbH
5. Brisbane Bus Lines Pvt. Ltd.
6. BYD Motors Inc.
7. Daimler Truck AG
8. EBUSCO BV
9. H?BNER GmbH & Co. KG
10. Jebsen & Jessen Industrial Solutions GmbH
11. MAN Truck & Bus SE
12. NFI Group Inc.
13. OTOKAR Otomotiv ve Savunma Sanayi
14. Proterra Inc.
15. Scania Total Transport Solution
16. Solaris Bus & Coach sp. z o.o.
17. Tata Motors Limited
18. VDL GROEP BV
19. Zhongtong Bus Holdings Co. Ltd.