| Ex-F ImpInternational Trading Co., Limited | | Live |
| EXFE Holdings Limited | Private company limited by shares | Live |
| EXFIELD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Exfine Chemicals Co., Limited | Private company limited by shares | Live |
| EXFO China Limited | Private company limited by shares | Live |
| EXFORD LIMITED | Private company limited by shares | Dissolved |
| EXFRAMO LIMITED | Private company limited by shares | Dissolved |
| EXFRESH CATERING LIMITED | | Live |
| ExFresh (Hong Kong) Limited | Private company limited by shares | Live |
| ExFurniture Company Limited | Private company limited by shares | Dissolved |
| EXFUZE INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Live |