| HIGHLINE LIMITED | Private company limited by shares | Dissolved |
| Highline Consulting Limited | Private company limited by shares | Live |
| HIGHLINE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HIGHLINE GLOBAL LIMITED | Private company limited by shares | Live |
| HIGHLINE (HONG KONG) LOGISTIC COMPANY LIMITED | Private company limited by shares | Live |
| HIGHLINE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Highline Industrial Limited | Private company limited by shares | Live |
| HIGHLINE INVESTMENTS LIMITED | Private company limited by shares | Live |
| HIGHLINE LOGISTIC HK LIMITED | Private company limited by shares | Live |
| Highline Technology Limited | Private company limited by shares | Live |
| HIGHLINE UNITED ASIA LIMITED | Private company limited by shares | Live |
| HIGHLINE UNITED (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HIGHLINETECK CO., LIMITED | Private company limited by shares | Live |