| SMARTLINE LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE LIMITED | Private company limited by shares | Live |
| Smartline Furniture Co., Limited | Private company limited by shares | Live |
| Smartline Trading Co., Limited | Private company limited by shares | Live |
| SMARTLINE HOLDINGS LIMITED | Private company limited by shares | Live |
| SMARTLINE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SMARTLINE INDUSTRIES LIMITED | Private company limited by shares | Live |
| Smartline Information Systems Limited | Private company limited by shares | Live |
| SMARTLINE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE TRADING LIMITED | Private company limited by shares | Dissolved |
| SMARTLINE TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |