| FONET CO., LIMITED | Private company limited by shares | Dissolved |
| FONET AK Mine Co., Limited | Private company limited by shares | Live |
| FONET PHA LEM MINE CO., LIMITED | Private company limited by shares | Dissolved |
| FONETECH CO., LIMITED | Private company limited by shares | Live |
| Fonetek Limited | Private company limited by shares | Live |
| FONETEK ELECTRONICS LIMITED | Private company limited by shares | Live |
| FONETRONICS LIMITED | Private company limited by shares | Dissolved |
| FONETT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |