| REGENT HIGA COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIGAIN LIMITED | Private company limited by shares | Live |
| HI-GAIN LAND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HI-GAIN ASSETS MANAGEMENT LIMITED | Private company limited by shares | Live |
| HIGAIN-HITECH (H.K.) COMPANY LIMITED | Private company limited by shares | Live |
| HIGALLEN CO., LIMITED | | Live |
| HIGAMI ENTERPRISES LIMITED | Private company limited by shares | Live |
| Higanbana International Co., Limited | Private company limited by shares | Live |
| HIGAO LIMITED | Private company limited by shares | Live |
| HIGARS TRADING (HONG KONG) COMPANY LIMITED | | Live |
| HIGAS Electronics Co., Limited | Private company limited by shares | Live |
| HIGASHI LIMITED | Private company limited by shares | Live |
| HIGASHI NIHON COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIGASHI TEAM LIMITED | | Live |
| HIGASHIGI INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| HIGASHIMORI CO., LIMITED | Private company limited by shares | Live |
| HIGASHIYAMA CO. LIMITED | Private company limited by shares | Live |
| HIGATE LIMITED | Private company limited by shares | Dissolved |
| Hi-Gatetac Technology Investment Group Limited | | Live |
| AL HIGAZ TRADING CO., LIMITED | Private company limited by shares | Live |