| HYLA LIMITED | Private company limited by shares | Live |
| HYLA ASIA LIMITED | Private company limited by shares | Live |
| HYLA ENVIRONMENTAL CLEANING LIMITED | Private company limited by shares | Dissolved |
| HYLA HONG KONG GROUP LIMITED | Private company limited by shares | Dissolved |
| HYLA (HONG KONG) LIMITED | Private company limited by shares | Live |
| HYLAB TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HYLAKE LIMITED | Private company limited by shares | Live |
| HYLAND COMPANY LIMITED | Private company limited by shares | Live |
| HYLAND COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYLAND DEVELOPMENTS LIMITED | Private company limited by shares | Live |
| HYLAND INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HYLANDER LIMITED | Private company limited by shares | Dissolved |
| HYLANDTIRE LIMITED | Private company limited by shares | Live |
| Hylas Technology Limited | Private company limited by shares | Dissolved |
| HYLAX TECH CO., LIMITED | Private company limited by shares | Live |