| ES&Y HK Limited | | Live |
| ESYB Technology Limited | Private company limited by shares | Live |
| ESYLIF LIMITED | Private company limited by shares | Live |
| E-Syllion Co., Limited | Private company limited by shares | Dissolved |
| ESYLUX Asia Limited | Private company limited by shares | Live |
| ESYNERGIES ASIA LIMITED | Private company limited by shares | Dissolved |
| E-SYNET LIMITED | Private company limited by shares | Dissolved |
| ESYNIC ONLINE LIMITED | Private company limited by shares | Live |
| E-SYS DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| ESYS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| E-SYS Solution Limited | Private company limited by shares | Live |
| ESYS FUTURE TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| ESYS TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ESYS VENTURES LIMITED | Private company limited by shares | Live |
| e-Systems Limited | Private company limited by shares | Live |