| JOINT-MECHANO COMPANY LIMITED | Private company limited by shares | Live |
| JOINT-MECHANO CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| JOINT-MECHANO DESIGN CO., LIMITED | Private company limited by shares | Dissolved |
| JOINT-MECHANO ENGINEERING & CONSTRUCTION CO. LIMITED | Private company limited by shares | Dissolved |
| JOINT-MECHANO INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG JOINT-MECHANO COMPANY LIMITED | Private company limited by shares | Dissolved |
| JOINT-MECHANO (OVERSEAS) COMPANY LIMITED | Private company limited by shares | Dissolved |