| Company Name | Type | Status |
|---|---|---|
| TECHTONE (HK) ENERGY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ORIENT TECHTONE INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| TECHTONE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Tech-Tone International Supply Chain Management Co. Limited | Private company limited by shares | Live |