| SYSDREAM ASIA LIMITED | Private company limited by shares | Dissolved |
| Sysdrinking Limited | Private company limited by shares | Dissolved |
| SYSDYNAMIC LIMITED | Private company limited by shares | Dissolved |
| sysfanclub Company Limited | Private company limited by shares | Live |
| SYSGEN PACIFIC LIMITED | Private company limited by shares | Dissolved |
| SYSHAN CAPITAL LIMITED | Private company limited by shares | Live |
| SYSHOLIC LIMITED | Private company limited by shares | Live |
| Sysiaco Eximtra Holdings (HK) Limited | Private company limited by shares | Live |
| SYSKALI LIMITED | Private company limited by shares | Live |
| SYSLANCE TECHNOLOGY SERVICES LIMITED | Private company limited by shares | Live |
| SYSLINK LIMITED | Private company limited by shares | Live |
| SYSLINK HK LIMITED | Private company limited by shares | Live |
| SYSLINK SYSTEMS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| SYSLINK (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SYSLINK INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SYSLINK INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SYSLINK ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| SYS-LINK TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| SYSLINTEC LIMITED | Private company limited by shares | Live |
| SYSLOGIC LIMITED | Private company limited by shares | Dissolved |
| SysLogic Company Limited | Private company limited by shares | Live |
| SYSLON (ASIA) LIMITED | Private company limited by shares | Live |
| SYSMA INTERNATIONAL TRADING CORPORATION (H.K.) LIMITED | Private company limited by shares | Live |
| SYSMAC COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYSMAGIC SOFTWARE SOLUTION COMPANY LIMITED | Private company limited by shares | Live |
| SYSMAN LIMITED | Private company limited by shares | Dissolved |
| Sysmart Limited | Private company limited by shares | Live |
| 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 private Limited | | Live |
| 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 |