| Smart-YanGene Limited | | Live |
| SMARTYEAR LIMITED | Private company limited by shares | Dissolved |
| SMARTYEAR ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SMARTYET LIMITED | Private company limited by shares | Live |
| SmartyLife HK Limited | | Live |
| Smartypants Celebrations Limited | Private company limited by shares | Live |
| SMARTYPE LIMITED | Private company limited by shares | Dissolved |
| SMARTZEN LIMITED | Private company limited by shares | Live |
| SmartZEO Limited | Private company limited by shares | Live |
| ShenZhen Smart-Zone Technology Limited | Private company limited by shares | Live |
| S-Marvel HK Holding Limited | Private company limited by shares | Live |