| SINO WEST ENERGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINOTONE TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| SINO GAIN TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINO ORIENT ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINO BRIDGE(HK) LIMITED | Private company limited by shares | Live |
| HK SISSY'S INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| ZHUHAI SINOR ELECTRONICS DEVICES CO., LIMITED | Private company limited by shares | Live |
| SINO-TRANS INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| SILVER HORIZON LIMITED | Private company limited by shares | Dissolved |
| SINO JINSHU RESOURCES LIMITED | Private company limited by shares | Live |
| UNO DRAGON SINO LIMITED | Private company limited by shares | Live |
| TOP SINO SB LIMITED | Private company limited by shares | Live |
| Simple Rules Limited | Private company limited by shares | Live |
| SINO OCEAN STONE HONGKONG CO., LIMITED | Private company limited by shares | Dissolved |
| MEGA SINO INT'L GROUP LIMITED | Private company limited by shares | Live |
| SINO RAINBOW CORPORATION LIMITED | Private company limited by shares | Live |
| WINNING SIGN LIMITED | Private company limited by shares | Dissolved |
| SING YAT ENGINEERING LIMITED | Private company limited by shares | Live |
| Sino Toiletries Limited | Private company limited by shares | Live |
| SINO XINHAI CULTURAL FOUNDATION LIMITED | Private company limited by shares | Live |
| SINO CAPITAL HOLDING GROUP LIMITED | Private company limited by shares | Live |
| SINOFOR CO., LIMITED | Private company limited by shares | Live |
| SICHUAN LSLD ELECTROMECHANICAL LIMITED | Private company limited by shares | Live |
| Sicon Electronics (Hong Kong) Limited | Private company limited by shares | Live |
| SigmaPlus Limited | Private company limited by shares | Live |
| TAK SING INTERNATIONAL TRADING COMPANY (HK) LIMITED | Private company limited by shares | Live |
| SINOLAM CO., LIMITED | Private company limited by shares | Live |
| SINOLINK (HK) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SIDLEY CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| SINOBENZ INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| SICHUAN HONSON TRADING GROUP CO., LIMITED | Private company limited by shares | Live |
| SINO (HK) BUSINESS SERVICE CO., LIMITED | Private company limited by shares | Live |
| YORK SINO DEVELOP LIMITED | Private company limited by shares | Dissolved |
| VICTORY SINO DEVELOP LIMITED | Private company limited by shares | Dissolved |
| Sinovision Digital Co., Limited | Private company limited by shares | Live |
| MARK SINO DEVELOP LIMITED | Private company limited by shares | Live |
| SINO VICTORIA LIMITED | Private company limited by shares | Live |
| SINO HARBOUR TRADING LIMITED | Private company limited by shares | Live |
| SINOMACH INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| SINO EAST MARINE CO., LIMITED | Private company limited by shares | Dissolved |
| American Simudun International Oil Co., Limited | Private company limited by shares | Live |
| SMART SINO ENGINEERING LIMITED | Private company limited by shares | Live |
| Sino Wisdom Investment Management Limited | Private company limited by shares | Dissolved |
| SINO BRIGHT INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| MULTI SINO INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| SINOSUNLIGHT LIMITED | Private company limited by shares | Live |
| SIKO AIR ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| TRINITY SILVER CAPITAL COMPANY LIMITED | Private company limited by shares | Live |
| TSEN SING LIMITED | Private company limited by shares | Dissolved |
| SINO CROWN TRADING LIMITED | Private company limited by shares | Live |
| SIMPLY INTEGRATION LIMITED | Private company limited by shares | Live |
| Two Sigma Asia Pacific, Limited | Private company limited by shares | Live |
| FUNG SING (4S) LIMITED | Private company limited by shares | Live |
| SINO GOOD INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| Cheuk Sing (Hong Kong) Company Limited | Private company limited by shares | Live |
| Ningbo Crown Sino Enterprise Limited | Private company limited by shares | Live |
| SINO KING GLOBAL LIMITED | Private company limited by shares | Live |
| SINO MARK INVESTMENTS LIMITED | Private company limited by shares | Live |
| SIMADE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| FINE SILICONE COMPANY LIMITED | Private company limited by shares | Live |
| SINOGRAND PHARMA LIMITED | Private company limited by shares | Live |
| Sino Powergen Co., Limited | Private company limited by shares | Live |
| SINOSYSTEMS LIMITED | Private company limited by shares | Live |
| SINOCRANE PARTS INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| SIEMNES LIMITED | Private company limited by shares | Live |
| SUCCESS SINO LIMITED | Private company limited by shares | Live |
| SINO HARBOUR INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINO TRADING INVESTMENT LIMITED | Private company limited by shares | Live |
| SIPIERSEN (CHINA) LIMITED | Private company limited by shares | Dissolved |
| HUIZHOU JOINT SINMCVLL ELECTRONIC TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| GLORY SINO INVESTMENT LIMITED | Private company limited by shares | Live |
| SINOCITI INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CROWN SINO INDUSTRIAL LIMITED | Private company limited by shares | Live |
| LEI SING PROPERTY COMPANY LIMITED | Private company limited by shares | Live |
| SIC-Sotang International Corporation Of China Limited | Private company limited by shares | Live |
| YISHIN SILASTIC METAL PRODUCT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINOLINK FINANCE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BESTONE SILICONE NEW MATERIALS CO., LIMITED | Private company limited by shares | Live |
| Long Sing Sing Limited | Private company limited by shares | Dissolved |
| THREE SISTERS LIMITED | Private company limited by shares | Live |
| SINO REFRIGERATION EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| SINCINO INTERNATIONAL TRADE (HONG KONG) LIMITED | Private company limited by shares | Live |
| Silkroad Property Partners Limited | Private company limited by shares | Live |
| Big Sixth Industry Limited | Private company limited by shares | Live |
| SINO INDUSTRIAL INVESTMENT LIMITED | Private company limited by shares | Live |
| SINO CHASER MANAGEMENT LIMITED | Private company limited by shares | Live |
| Sing Fung Electrical Engineering Company Limited | Private company limited by shares | Dissolved |
| SINO GRAND TRADING LIMITED | Private company limited by shares | Live |
| HK SIDA PLASTIC PRODUCTS LIMITED | Private company limited by shares | Live |
| AOYU SILICONE RUBBER MANUFACTURE LIMITED | Private company limited by shares | Live |
| SINICVISION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SINO CHARIOT LIMITED | Private company limited by shares | Live |
| Simply The Best Properties Limited | Private company limited by shares | Live |
| SICOM ELECTRONICS HONG KONG CO. LIMITED | Private company limited by shares | Live |
| SINO TACT CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CHINA HK (INTERNATIONAL) SIPENG TOURISM HOLDING GROUP LIMITED | Private company limited by shares | Live |
| Sing Fai Property Limited | Private company limited by shares | Live |
| SING YIP TRADING LIMITED | Private company limited by shares | Live |
| Silk-Roads Shipping Limited | Private company limited by shares | Live Commenced dormancy on 22-Apr-2016 |
| SINO POWERS GROUP LIMITED | Private company limited by shares | Live |