- AGCO Corporation
- Caterpillar Inc.
- Cummins Inc.
- Deere & Company
- Deutz AG
- Komatsu Ltd
- Mahindra & Mahindra Limited (Mahindra Powertrain)
- Scania AB
- AB Volvo
- Yanmar Co. Ltd
- Weichai Power Co. Ltd
- Kubota Corp