| Isuzu Motors Limited |
| Komatsu Ltd. |
| TADANO LTD. |
| DENSO Corporation |
| Tokyo Radiator MFG. Co., Ltd. |
| Toyota Motor Corporation |
| Toyota Industries Corporation |
| Nissan Motor Co.,Ltd. |
| Hitachi Automotive Systems, Ltd. |
| Hino Motors, Ltd. |
| Fuji Heavy Industries Ltd. |
| FURUKAWA UNIC CORPORATION. |
| Mazda Motor Corporation. |
| Mitsubishi Heavy Industries, Ltd. |
| Mitsubishi Fuso Truck and Bus Corporation |
| UD Trucks Corporation |
| EATON TRUCK COMPONENTS Sp. z o.o. |
| Daimler AG |
| Dymos Inc. |
| Volvo Group Trucks |
Others
