| THERMOSCAN INTERNATIONAL (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| THERMOSCAN INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| THERMO-SEAL COMPANY LIMITED | Private company limited by shares | Live |
| Thermosoles Limited | Private company limited by shares | Live |
| ThermoSpectra Limited | | Live |
| Thermosphere Global Limited | Private company limited by shares | Live |
| THERMOSPRING LIMITED | Private company limited by shares | Dissolved |
| CHWEN-DER THERMOSTAT COMPANY LIMITED | Private company limited by shares | Live |