| COSY COMPANY LIMITED | Private company limited by shares | Dissolved |
| L's Cosy Limited | Private company limited by shares | Live |
| Cosy Limited | | Live |
| COSY CARE LIMITED | Private company limited by shares | Dissolved |
| COSY ENTERPRISES LIMITED | Private company limited by shares | Live |
| COSY FURNITURE CO. LIMITED | Private company limited by shares | Live |
| COSY REALTY LIMITED | Private company limited by shares | Dissolved |
| COSYA CO., LIMITED | Private company limited by shares | Live |
| Cosybyme Limited | Private company limited by shares | Dissolved |
| COSYCOZY LIMITED | | Live |
| COSYHOME TRADING COMPANY LIMITED | Private company limited by shares | Live |
| COSYKNIT CO., LIMITED | Private company limited by shares | Live |
| COSYLAND LIMITED | Private company limited by shares | Dissolved |
| Cosymark Limited | Private company limited by shares | Live |
| COSYMEI LIMITED | Private company limited by shares | Live |
| Co-Synergy Limited | Private company limited by shares | Live |
| COSYOGA Limited | Private company limited by shares | Live |
| COSYPARK INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| CO-SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| CO-SYSTEM INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |