| Sumico Technologies Limited | | Live |
| Sumilux Technologies Limited | Private company limited by shares | Live |
| SUMIT Technologies Limited | Private company limited by shares | Live |
| SUMMIT TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUMMIT TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUMMIT TECHNOLOGIES (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SUMMITSYS TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SunASIC Technologies Limited | Private company limited by shares | Live |
| SUNBO TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUNCO TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUNDANCE TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| Sundial Technologies Limited | Private company limited by shares | Dissolved |
| SUN.E TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUNFAIRS TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUNFARY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Sunglor Technologies Company Limited | Private company limited by shares | Live |
| SUNLIGHT TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Sunnirise Technologies Limited | | Live |
| SUNRICH TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUNRISE TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUNSHINE LIGHTING TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Live |
| SUNSTAR TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUNSTAR TECHNOLOGIES LIMITED | | Live |
| SUNTEC TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUNTEL DIGITAL TECHNOLOGIES INCORPORATION LIMITED | Private company limited by shares | Dissolved |
| SUNUP TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUNY TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Live |
| SUNY ELECTRONIC TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Sunyee Technologies Co. Limited | Private company limited by shares | Dissolved |
| SUPER TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUPER DRAGON TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Super Grand Technologies Limited | Private company limited by shares | Live |
| SUPER TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SUPERA TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUPERCOOL TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUPERCOOL TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| SUPERICH TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUPERING TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUPERJET TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUPERLINK TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Supersensing Technologies Limited | Private company limited by shares | Live |
| SUPPLY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUPPLY JOY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Avanti Supply Technologies Limited | | Live |
| SUPRA TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Suprema Technologies Limited | | Live |
| SURE WIN TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SURE RICH TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SURE SUCCESS TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Surewell Advanced Technologies Limited | Private company limited by shares | Live |
| Suricat Technologies Limited | Private company limited by shares | Live |
| SURPLUS TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SUTHERLAND TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUZUKI TECHNOLOGIES CO. LIMITED | Private company limited by shares | Live |
| SVECIA TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SVTC Technologies Hong Kong Limited | Private company limited by shares | Dissolved |
| Swan Technologies Limited | Private company limited by shares | Live |
| SWAP TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Sweans Technologies Limited | Private company limited by shares | Live |
| Sweettobuy Technologies HK Limited | Private company limited by shares | Live |
| SWIFT POWER TECHNOLOGIES HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SwiftPlus Technologies Hong Kong Company Limited | Private company limited by shares | Live |
| Swipal Technologies HK Holding Limited | Private company limited by shares | Live |
| Swipal Technologies Hong Kong Limited | Private company limited by shares | Live |
| REG Digital Switching Technologies Limited | | Live |
| Sycamore Investment Technologies Limited | Private company limited by shares | Live |
| Sycomp Technologies Hong Kong Limited | Private company limited by shares | Live |
| Sycra Technologies Limited | Private company limited by shares | Live |
| SYGNOS TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Symphony Technologies Limited | Private company limited by shares | Live |
| Synap Technologies Limited | Private company limited by shares | Live |
| SYNAPS TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SyncroTec Technologies Limited | Private company limited by shares | Live |
| SynerNova Technologies Limited | Private company limited by shares | Live |
| Syniverse Technologies LLC Limited | Private company limited by shares | Live |
| Syniverse Technologies (China) Limited | Private company limited by shares | Live |
| Syniverse Technologies Asia Pacific Limited | Private company limited by shares | Live |
| SynLife Technologies Limited | Private company limited by shares | Live |
| ADVANCED SYNOPTIC TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SYNTEL TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Synthes Technologies Limited | Private company limited by shares | Live |
| SYSCON TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TOP SYSTEM TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| DB SYSTEM TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SI System Technologies Company Limited | Private company limited by shares | Live |
| NEW SYSTEM TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| BEST SYSTEM TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| CABLE SYSTEM TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SYSTEM TECHNOLOGIES & NETWORK LIMITED | Private company limited by shares | Dissolved |
| INTERACTIVE SYSTEMS & TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Smart Systems and Software Technologies Limited | | Live |
| SYSTOM TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYTECH TECHNOLOGIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| T.A. TECHNOLOGIES HK LIMITED | Private company limited by shares | Live |
| TAICHEN DIGITAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| TAKCOO TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| One Take technologies Limited | | Live |
| TAKSON TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| TALENT TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| TALENT TECHNOLOGIES LIMITED | Private company limited by shares | Live |