| Genz Digital Limited | | Live |
| GenZ Entertainment Limited | | Live |
| ELECTRONIC TECHNOLOGY SYSTEMS DR. GENZ (HK) LIMITED | Private company limited by shares | Dissolved |
| GENZANO LIMITED | Private company limited by shares | Dissolved |
| GENZEL LIMITED | Private company limited by shares | Live |
| GENZEN LIMITED | Private company limited by shares | Dissolved |
| GenZen Limited | Private company limited by shares | Live |
| GENZO INDUSTRIAL LIMITED | | Live |
| GENZONE TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Genzy Digital Limited | Private company limited by shares | Live |
| GENZYME ASIA LIMITED | Private company limited by shares | Dissolved |
| Genzyme Consulting Company Limited | Private company limited by shares | Live |
| GENZYME INVESTMENT & DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Genzyme Environmental Technology (Group) Limited | Private company limited by shares | Live |
| GENZYME HONG KONG LIMITED | Private company limited by shares | Dissolved |