| HTC THERMO AND HEATING ELEMENTS CO., LIMITED | Private company limited by shares | Live |
| THERMO POWER PLASTIC & METAL ELECTRIC MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| INFRARED THERMO SCAN LIMITED | Private company limited by shares | Dissolved |
| THERMO SQUARE LIMITED | Private company limited by shares | Live |
| THERMO TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| BASIS THERMO TECHNOLOGY LIMITED | | Live |
| Therm-O-Disc (Asia) Limited | | Live |
| ITALY OMI ESPECIALLY THERMODYNAMIC ENERGY EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| THERMO-ELECTRIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| EAST DISTRICT THERMOELECTRICITY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| Hawtai Thermoelectricity (Hong Kong) Limited | Private company limited by shares | Live |
| THERMO-FOAM MANUFACTURER, LIMITED -THE- | Private company limited by shares | Dissolved |
| YIU KEE THERMO-FOAM MANUFACTURER COMPANY LIMITED | Private company limited by shares | Dissolved |
| THERMOHOUSE LIMITED | Private company limited by shares | Live |
| ADSIGNO THERMOLUMINESCENCE LABORATORY LIMITED | Private company limited by shares | Live |
| THERMOLUX-DOOR LIMITED | Private company limited by shares | Dissolved |
| THERMONIK LIMITED | Private company limited by shares | Live |
| THERMOPLASTIC COMPANY LIMITED | Private company limited by shares | Live |
| THERMOPRO CO., LIMITED | Private company limited by shares | Live |
| THERMOR LIMITED | Private company limited by shares | Dissolved |
| 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 |
| THERMO-TECH LIMITED | Private company limited by shares | Dissolved |
| THERMOTECH LIMITED | Private company limited by shares | Live |
| THERMOTECH MFG LIMITED | Private company limited by shares | Live |
| THERMOTEX LIMITED | Private company limited by shares | Dissolved |