| | Takenaka Seisakusho Co., Ltd. |  Japan | Manufacturing |
| | SHIRAI TECH LIMITED | Japan | Manufacturing |
| | KAWASAKI KIKO CO., LTD. | Japan | Manufacturing, Agriculture |
| | Kawasaki Geological Engineering Co., Ltd. | Japan | Manufacturing, Construction |
| | KOMATSU KAIHATSU Corp. | Japan | Manufacturing |
| | Mitsubishi Heavy Industries Environmental & Chemical Engineering Co.,Ltd. | Japan | Manufacturing |
| | Asano Laboratories Co. Ltd. | Japan | Manufacturing |
| | ATOX Co., Ltd. | Japan | Manufacturing |
| | SODA NIKKA CO., LTD. | Japan | Manufacturing |
| | Shikoku Welding Electrode co., Ltd. | Japan | Manufacturing |
| | IHI Infrastructure Systems Co., Ltd. | Japan | Manufacturing |
| | ATTO Co., Ltd. | Japan | Manufacturing |
