| HIGHSO LIMITED | Private company limited by shares | Dissolved |
| HIGHSON LIMITED | Private company limited by shares | Dissolved |
| HIGHSONAR TECHNOLOGY HK CO., LIMITED | Private company limited by shares | Live |
| HIGHSONIC LIMITED | Private company limited by shares | Dissolved |
| HIGHSONIC INDUSTRIAL LIMITED | Private company limited by shares | Live Commenced dormancy on 14-Dec-2007 |
| HIGHSONIC INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HIGHSONIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HighSound Industrial Development Limited | Private company limited by shares | Live |
| HIGH-SOUND (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HIGHSOURCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIGHSOURCE GLOBAL LIMITED | Private company limited by shares | Live |
| HIGHSOURCE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| HIGHSOURCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Highsource Technology Co., Limited | Private company limited by shares | Live |