| Company Name | Type | Status |
|---|---|---|
| SERON LIMITED | Private company limited by shares | Dissolved |
| SERON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SERON SERVICE LIMITED | Private company limited by shares | Live |
| SERONERA LIMITED | Private company limited by shares | Dissolved |
| SERONERA TRADING COMPANY LIMITED | Private company limited by shares | Live |
| Seronin Company Limited | Live | |
| SERONO HONG KONG LIMITED | Private company limited by shares | Dissolved |