| HILO LCD TV LIMITED | Private company limited by shares | Dissolved |
| HILO ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WHITBY HILOCK LIMITED | Private company limited by shares | Dissolved |
| HILODO COMPANY LIMITED | Private company limited by shares | Live |
| HK HILOK HIGH PRESSURE TECHNIQUE LIMITED | Private company limited by shares | Dissolved |
| HILOK HIGH VOLTAGE TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| HILOMI COMPANY LIMITED | Private company limited by shares | Dissolved |
| HILONG ENERGY LIMITED | Private company limited by shares | Live |
| Hilong Marine Engineering (Hong Kong) Limited | Private company limited by shares | Live |
| HILONG (HONG KONG) LIMITED | Private company limited by shares | Live |
| QINGDAO HILONG INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| HILONG INDUSTRY LIMITED | Private company limited by shares | Live |
| HILONG INTERNATIONAL INVESTMENT CO. LIMITED | Private company limited by shares | Live |
| Hilong New Material Limited | Private company limited by shares | Live |
| TAIWAN HILONG PLANT PROTECTION TECH LIMITED | Private company limited by shares | Dissolved |
| Hilong Technology Limited | Private company limited by shares | Live |
| HILONG INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| HILOON COMPANY LIMITED | Private company limited by shares | Live |
| HILOS FILO LIMITED | Private company limited by shares | Live |
| HILOSON FUNDS MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| HILOSTAR LIMITED | | Live |
| HILOW INVESTMENT LIMITED | Private company limited by shares | Live |