| GENTEC LIMITED | Private company limited by shares | Dissolved |
| GENTEC (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GENTEC HONGKONG LIMITED | Private company limited by shares | Live |
| GENTEC INVESTMENT LIMITED | Private company limited by shares | Live |
| GENTEC POWER LIMITED | Private company limited by shares | Dissolved |
| GENTEC SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Zyden Gentec Hong Kong Limited | Private company limited by shares | Live |
| GENTECH LIMITED | Private company limited by shares | Live |
| GenTech Guy Company Limited | | Live |
| GenTech Innovation Limited | Private company limited by shares | Live |