| HYZC TRADE LIMITED | | Live |
| Hong Kong HyzChang Trading Co., Limited | | Live |
| Hyzen International Limited | | Live |
| HYZING LIMITED | Private company limited by shares | Dissolved |
| HYZLYK CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| HYZLYK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HYZLYK MEMBRANCE TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| NE TKM HYZMAT LIMITED | Private company limited by shares | Live |
| HYZONA RESOURCES LIMITED | | Live |
| Hyzyuan Technology Co., Limited | Private company limited by shares | Live |