| I-TONE LIMITED | Private company limited by shares | Dissolved |
| I-TONE GROUP LIMITED | Private company limited by shares | Live |
| AMERICA ITONE TECHNOLOGY INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| ITONE DIGITAL INTERNATIONAL CO. LIMITED | Private company limited by shares | Live |
| I-TONE Intelligent Products Co., Limited | Private company limited by shares | Live |
| I-TONE ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| I-TONE TELECOMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Itonebest Limited | Private company limited by shares | Live |