| KOSEN LIMITED | Private company limited by shares | Dissolved |
| KOSEN LIMITED | | Live |
| KOSEN HOBBY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| Kosen International Co., Limited | Private company limited by shares | Dissolved |
| KOSEN SPORTS CO., LIMITED | Private company limited by shares | Live |
| KOSEN INT'L GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| KOSEN GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG KOSEN INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG KOSEN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TOBISHI KOSEN (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| KOSEN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| KOSEN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| KOSEN SERVICE LIMITED | Private company limited by shares | Dissolved |
| Kosen Technology Co., Limited | Private company limited by shares | Live |
| TERRE KOSEN (HK) LIMITED | Private company limited by shares | Live |
| KOSEN TRADING LIMITED | | Live |
| ZHEJIANG KOSEN VALVE CO., LIMITED | Private company limited by shares | Dissolved |