| COSO ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| COSO ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| COSO FASHION LIMITED | Private company limited by shares | Live |
| COSO (HK) NETWORK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Hongkong Coso Technology Co., Limited | Private company limited by shares | Live |
| COSO INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Live |
| COSO ELECTRONIC (INTERNATIONAL) HONGKONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| COSO ELECTRONIC TECH CO., LIMITED | Private company limited by shares | Live |
| COSOC Limited | Private company limited by shares | Live |
| H.K COSOCAS INT'L DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Cosodine Company Limited | Private company limited by shares | Dissolved |
| COSOLUTIONS CONSULTING INC. LIMITED | Private company limited by shares | Live |
| COSOMAN LIMITED | Private company limited by shares | Live |
| COSOMIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| COSON COMPANY LIMITED | Private company limited by shares | Dissolved |
| COSONIC LIMITED | Private company limited by shares | Live |
| COSONIC ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| CO-SONIC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| COSONIC (HK) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Panda Cosortium Co., Limited | Private company limited by shares | Live |
| COSOUL TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Live |
| CO-SOURCE LIMITED | Private company limited by shares | Dissolved |