| SYSMARTS INDUSTRIAL LIMITED | | Live |
| SYSMATIC LIMITED | Private company limited by shares | Dissolved |
| SYSMATIC SOLUTIONS LIMITED | Private company limited by shares | Live |
| SYSMAX LIMITED | Private company limited by shares | Dissolved |
| SYSMAX LIMITED | Private company limited by shares | Dissolved |
| SYSMAX INDUSTRY TRADING COMPANY LIMITED | Private company limited by shares | Live |
| SYSMAX INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYSMAX TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SYSMED HOMECARE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sysnance Limited | Private company limited by shares | Live |
| SYSNET DATA CO. LIMITED | Private company limited by shares | Live |
| SYSNET GLOBAL LIMITED | Private company limited by shares | Dissolved |
| SYSNETS TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| SYSNETZ LIMITED | Private company limited by shares | Dissolved |
| SYSNIX (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Sysnosys Technology Co., Limited | Private company limited by shares | Live |
| SYSO ENTERPRISES & CO LIMITED | Private company limited by shares | Dissolved |
| SYSOFT LIMITED | Private company limited by shares | Dissolved |
| SYS-OLOGY HONG KONG LIMITED | Private company limited by shares | Live |
| Sylvie & Syson Limited | | Live |
| SysOp Limited | Private company limited by shares | Live |
| SYSPARK I.CENTRE, LIMITED | Private company limited by shares | Live |
| Syspedia Technology Inc Limited | Private company limited by shares | Live |
| Sysplan Company Limited | Private company limited by shares | Dissolved |
| SYSPO INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SYSPOWER LIMITED | Private company limited by shares | Dissolved |
| SYSPRO LIMITED | Private company limited by shares | Dissolved |
| SYSPRO (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SYS-PRO INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Sysqon Solutions Limited | Private company limited by shares | Dissolved |
| SYSRIFE COMPANY LIMITED | Private company limited by shares | Live |
| SYSROAD POWER INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SYSSOFT LIMITED | Private company limited by shares | Live |
| Systal Technology Solutions Limited | | Live |
| Systans International Trading Company | | Live |
| SYSTCOM INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| BOWE SYSTEC CHINA LIMITED | Private company limited by shares | Dissolved |
| SYSTEC SOLUTIONS LIMITED | Private company limited by shares | Live |
| UENO SYSTEC (HK) COMPANY LIMITED | Private company limited by shares | Live |
| 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 |
| SYSTECS CO. LIMITED | Private company limited by shares | Dissolved |
| MEI SYSTEGRATION LIMITED | Private company limited by shares | Dissolved |
| Systek Limited | Private company limited by shares | Dissolved |
| SYSTEK SOLUTIONS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| BIS SYSTEM LIMITED | Private company limited by shares | Dissolved |
| JET SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ON SYSTEM LIMITED | Private company limited by shares | Live |
| ONE SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| JOY SYSTEM LIMITED | Private company limited by shares | Live |
| B & S SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SYSTEM ACE LIMITED | Private company limited by shares | Dissolved |
| SYSTEM RAY LIMITED | Private company limited by shares | Dissolved |
| VB SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| WYS SYSTEM LIMITED | Private company limited by shares | Live |
| SYSTEM LIMITED | Private company limited by shares | Live |
| TOP SYSTEM LIMITED | Private company limited by shares | Dissolved |
| D & F SYSTEM LIMITED | Private company limited by shares | Live |
| RS SYSTEM LIMITED | Private company limited by shares | Live |