| HYKDL LIMITED | | Live |
| HY-KHEMARA COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYKIE COMPANY LIMITED | Private company limited by shares | Live |
| Hy-Ko Products (Asia) Company Limited | Private company limited by shares | Live |
| HYKOKO LIMITED | Private company limited by shares | Dissolved |
| HYKONG TRADE LIMITED | Private company limited by shares | Dissolved |
| Hykop Limited | Private company limited by shares | Live |
| HYKSOS LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Aug-2015 |
| HYKTRADE CO., LIMITED | Private company limited by shares | Live |