| NEUTROFILMS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG NEUTROGENA BIOTECHNOLOGY (INTERNATIONAL) COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEUTRON LIMITED | Private company limited by shares | Dissolved |
| NEUTRON COMPANY LIMITED | Private company limited by shares | Dissolved |
| EP Neutron HK Limited | | Live |
| Neutron HK Company Limited | | Live |
| NEUTRON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Neutronic Limited | | Live |
| Neutronpay HK Limited | | Live |
| Neutrons Global Trading Co., Limited | | Live |
| Neutrons Technology Limited | Private company limited by shares | Live |