| SYSTECH LIMITED | Private company limited by shares | Dissolved |
| SYSTECH LIMITED | Private company limited by shares | Dissolved |
| Systech Limited | Private company limited by shares | Live |
| JNS SYSTECH LIMITED | Private company limited by shares | Live |
| SYSTECH CAPITAL LIMITED | Private company limited by shares | Dissolved |
| SYSTECH CENTURY LIMITED | Private company limited by shares | Live |
| SYSTECH TECHNOLOGY CHINA LIMITED | Private company limited by shares | Live |
| SYSTECH TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SYSTECH COMPUTER SYSTEMS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYSTECH CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| SYSTECH CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| SYSTECH BUSINESS CONSULTING LIMITED | Private company limited by shares | Dissolved |
| SYSTECH DESIGN LIMITED | Private company limited by shares | Dissolved |
| SysTech Development Limited | Private company limited by shares | Dissolved |
| SYSTECH ELECTRONICS LIMITED | Private company limited by shares | Live |
| GENESIS SYSTECH LIMITED | Private company limited by shares | Live |
| SYSTECH (HK) LIMITED | Private company limited by shares | Dissolved |
| SOLOMON SYSTECH (HK) LIMITED | Private company limited by shares | Live |
| HONG KONG ESTAR SYSTECH LIMITED | Private company limited by shares | Dissolved |
| ITOCHU SYSTECH (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SYSTECH (HONG KONG) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONGKONG CNESTAR SYSTECH LIMITED | Private company limited by shares | Live |
| HONGKONG ESDAR SYSTECH LIMITED | Private company limited by shares | Live |
| INFONET SYSTECH LIMITED | Private company limited by shares | Dissolved |
| Systech Integrators Limited | Private company limited by shares | Live |
| SYSTECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYSTECH INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SYSTECH INT'L LIMITED | Private company limited by shares | Dissolved |
| SYSTECH INVESTMENTS LIMITED | Private company limited by shares | Live |
| SYSTECH MARKETING (ASIA) LIMITED | Private company limited by shares | Live |
| SYSTECH TECHNOLOGY & MEDIA SERVICES LIMITED | Private company limited by shares | Live Commenced dormancy on 10-Apr-2012 |
| SYSTECH ON-LINE LIMITED | Private company limited by shares | Live |
| SYSTECH SERVICES LIMITED | Private company limited by shares | Dissolved |
| SOLOMON SYSTECH LIMITED | Private company limited by shares | Live |
| SysTech Solutions Limited | Private company limited by shares | Live |
| Systech Solutions Limited | Private company limited by shares | Live |
| SYSTECH SYSTEM (STS) LIMITED | Private company limited by shares | Live |
| Systech Technology & Publications Limited | Private company limited by shares | Live |
| SYSTECH TECHNOLOGY AND RESEARCH LIMITED | Private company limited by shares | Live |
| SYSTECH TELECOM LIMITED | Private company limited by shares | Live |
| SYSTECH TELECOM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYSTECH WIRELESS NETWORK LIMITED | Private company limited by shares | Dissolved |
| SYSTECHTOYS LIMITED | Private company limited by shares | Live |