| SYNOVIA LIMITED | Private company limited by shares | Dissolved |
| SynoWorks Solutions Company Limited | Private company limited by shares | Dissolved |
| SYNPAK INDUSTRIAL (HK) CO., LIMITED | Private company limited by shares | Live |
| SYNPEAK LIMITED | Private company limited by shares | Live |
| SYNPHARM LIMITED | Private company limited by shares | Dissolved |
| SYNPLUZ SOLUTIONS COMPANY LIMITED | Private company limited by shares | Live |
| HK SYNPOWER LIMITED | Private company limited by shares | Live |
| SYNPOWER INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SynPower Capital Management Limited | Private company limited by shares | Live |
| Synpro Solutions Limited | Private company limited by shares | Live |
| SYNPROMAX LIMITED | Private company limited by shares | Live |
| Synpulse Hong Kong Limited | Private company limited by shares | Live |
| Synque Limited | Private company limited by shares | Live |
| SYNREE LIMITED | Private company limited by shares | Live |
| SYNREVOICE ASIA LIMITED | Private company limited by shares | Dissolved |
| Synrgi Limited | Private company limited by shares | Live |
| Synrgic (HK) Limited | Private company limited by shares | Live |
| Synrgic (Holdings) Limited | Private company limited by shares | Live |
| Synro Limited | Private company limited by shares | Live |
| Synsailing Limited | | Live |
| Synsasia Limited | Private company limited by shares | Live |
| Synsasia Group (Holding) Limited | Private company limited by shares | Live |
| Synsmooth Limited | | Live |
| SYNSOPHO LIMITED | Private company limited by shares | Live |
| SYNSPEC HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SYNST ELECTRONICS (HONG KONG) LIMITED | Private company limited by shares | Live |
| SYNSTAK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYNSTAR PHARMA CO., LIMITED | Private company limited by shares | Dissolved |
| SYNSTAR PHARMATECH CO., LIMITED | Private company limited by shares | Dissolved |
| SYNSTAR INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| SYNSTONES LIMITED | Private company limited by shares | Live |
| Synsun Investment Co., Limited | Private company limited by shares | Live |
| SYNSUN HEALTH CARE COMPANY LIMITED | Private company limited by shares | Live |
| Synsun Technology Limited | Private company limited by shares | Live |
| SYNTAC LIMITED | Private company limited by shares | Live |
| SYNTAG TECHNOLOGY LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Jul-2015 |
| SYNTAGMA LIMITED | Private company limited by shares | Dissolved |
| SYNTAK CO. LIMITED | Private company limited by shares | Live |
| SynTao Advisors Limited | Private company limited by shares | Live |
| SynTao Green Finance International Limited | | Live |
| SynTao Sustainability Limited | | Live |
| SYNTAX LIMITED | Private company limited by shares | Dissolved |
| SYNTAX LIMITED | Private company limited by shares | Dissolved |
| SPACE SYNTAX LIMITED | Private company limited by shares | Live |
| SYNTAXCOM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Syntaxyz Asia Limited | Private company limited by shares | Live |
| SYNTE ENTERPRISE LIMITED | Private company limited by shares | Live |
| SYNTEC 99 LIMITED | Private company limited by shares | Dissolved |
| SYNTEC NEW ENERGY GROUP CO., LIMITED | Private company limited by shares | Live |
| SYNTEC CORPORATION LIMITED | Private company limited by shares | Live |
| Syntec Enterprise Limited | Private company limited by shares | Dissolved |
| SYNTEC HAPPY LIMITED | Private company limited by shares | Live |
| SYNTEC HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SYNTEC SEMICONDUCTOR EQUIPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYNTEC NETWORK TECHNOLOGY & SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYNTEC OPTOELECTRONICS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| SYNTECH LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Apr-2005 |
| AI Syntech Limited | Private company limited by shares | Live |
| Syntech Asia Limited | Private company limited by shares | Live |
| SYNTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SYN-TECH (SHENZHEN) LIMITED | Private company limited by shares | Dissolved |
| SYN-TECH SYSTEM LIMITED | Private company limited by shares | Dissolved |
| Syntech Tooling Limited | Private company limited by shares | Live |
| Syntego ITS Limited | | Live |
| Syntegra RE Limited | Private company limited by shares | Live |
| SYNTEGRATE LIMITED | Private company limited by shares | Live |
| SYNTEK ELECTRIC CO., LIMITED | | Live |
| SYNTEK DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Syntek Holdings Limited | Private company limited by shares | Live |
| SYNTEK COMPUTER (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNITED SYNTEK HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HongKong SynTek Smart Technology Co., Limited | Private company limited by shares | Live |
| SYNTEK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SYNTEK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYNTEK RESOURCES LIMITED | Private company limited by shares | Dissolved |
| SYNTEK SYSTEMS LIMITED | Private company limited by shares | Live |
| SYNTELECT HK LIMITED | | Live |
| SYNTERACT CREATION LIMITED | Private company limited by shares | Live |
| SYNTERNATIONAL LIMITED | Private company limited by shares | Live |
| SYNTESI LIMITED | Private company limited by shares | Live |
| SYNTESIUM LIMITED | Private company limited by shares | Live |
| SYNTEX LIMITED | Private company limited by shares | Dissolved |
| SYNTEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYNTEX TRADE ASIA LIMITED | Private company limited by shares | Dissolved |
| SYNTEX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SYNTEX FASHIONS LIMITED | Private company limited by shares | Dissolved |
| SYNTEZA INVESTMENT LIMITED | Private company limited by shares | Live |
| SYNTHASIA INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| Synthax Holding Limited | Private company limited by shares | Live |
| Synthax Hong Kong Limited | Private company limited by shares | Live |
| Synthbox Limited | | Live |
| Synthder Incorporation Limited | Private company limited by shares | Live |
| Synthebot Limited | | Live |
| SYNTHECO LIMITED | Private company limited by shares | Dissolved |
| Synthect Polska Limited | Private company limited by shares | Live |
| Synthelab Limited | Private company limited by shares | Live |
| SYNTHESIS COMPANY LIMITED | Private company limited by shares | Dissolved |
| BHD SYNTHESIS LIMITED | Private company limited by shares | Live |
| Synthesis Limited | Private company limited by shares | Live |
| NEXT SYNTHESIS LIMITED | Private company limited by shares | Dissolved |