| Company Name | Type | Status |
|---|---|---|
| TOPTONE CO., LIMITED | Private company limited by shares | Live |
| Toptong Technology Co., Limited | Private company limited by shares | Live |
| TOP-TONIC (H.K.) ELECTRICAL MACHINERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOPTONIC INT'L CO., LIMITED | Private company limited by shares | Live |