| TONGA LIMITED | Private company limited by shares | Live |
| TONGA ENGINEERING LIMITED | Private company limited by shares | Live |
| TONGA ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TONGA INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| TONGAAT LIMITED | Private company limited by shares | Live |
| TONGAIN AGENT LIMITED | Private company limited by shares | Dissolved |
| TONGAIN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TONGALA LIMITED | Private company limited by shares | Live |
| tongan Limited | Private company limited by shares | Live |
| Tongan HK Limited | Private company limited by shares | Live |
| TONGAN CAPITAL LIMITED | Private company limited by shares | Live |
| TONGAN TRANSPORT LIMITED | Private company limited by shares | Live |
| Tongantang International (Hong Kong) Group Co., Limited | Private company limited by shares | Live |
| TONGAR LIMITED | Private company limited by shares | Live |
| TONGAS GROUP LIMITED | Private company limited by shares | Live |
| Tongasszon Trading Company Limited | | Live |
| TONGATE COMPANY LIMITED | Private company limited by shares | Dissolved |