| D.NAGATA CO., LTD. | Japan | Manufacturing |
| NAIGAI CO., Ltd | Japan | Manufacturing |
| Sohbi Kogei Co., Ltd. | Japan | Manufacturing |
| So Kikaku Sekkei Ltd. | Japan | Construction |
| Maintech Co., Ltd. | Japan | Manufacturing |
| KATAYAMA RIVET & SCREW CO., LTD. | Japan | Manufacturing |
| Yoshikawakuni Plastics Industries., Ltd. | Japan | Manufacturing, Material Science |
| Yoshikawakuni Plastics Industries., Ltd. | Japan | Manufacturing, Material Science |
| Honda Electronics Co., Ltd. | Japan | Manufacturing |
| Yoshiizumi Industry Corporation | Japan | Manufacturing |
| TSK CO.,LTD | Japan | Manufacturing |
| Asada Milling Co., Ltd. | Japan | Manufacturing |