| Koo's Atelier Company Limited | Private company limited by shares | Live |
| KOO'S CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| KOO'S ENVIRONMENTAL PROTECTION MOTOR TECHNIQUE COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOOS GROUP LIMITED | Private company limited by shares | Live |
| Koo's International (Hong Kong) Limited | Private company limited by shares | Live |
| KOO'S INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| Story by Koo's Limited | Private company limited by shares | Live |
| KOOSILOO LIMITED | Private company limited by shares | Live |
| KOOSION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| KOO_SIR COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOOSKIA LIMITED | Private company limited by shares | Dissolved |
| KOOSMIK LIMITED | Private company limited by shares | Live |
| KOOSOO INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| Koosound Technology Limited | Private company limited by shares | Live |
| KOOSTRONG LIMITED | Private company limited by shares | Dissolved |
| KOOSUM HI-TECH GROUP CO., LIMITED | Private company limited by shares | Live |