1. Caterpillar Inc.

2. Komatsu Ltd.

3. Volvo Group

4. Hitachi Construction Machinery Co. Ltd.

5. XCMG Construction Machinery Co. Ltd.

6. SANY Group Co. Ltd.

7. Shandong Lingong Construction Machinery Co. Ltd.

8. Doosan Infracore Co. Ltd.

9. Mitsubishi Heavy Industries
Ltd.

10. Zhengzhou Yutong Heavy Industries Co. Ltd.