| Po Sing Engineering (HK) Limited | Private company limited by shares | Live |
| SINO PRO CONSULTANTS LIMITED | Private company limited by shares | Live |
| Day Day Sing Investment Co. Limited | Private company limited by shares | Live |
| Sinovista Hong Kong Limited | Private company limited by shares | Live |
| SINCE TEK LIMITED | Private company limited by shares | Live |
| SINO-HK BOOKS IMPORT&EXPORT TRADING LIMITED | Private company limited by shares | Live |
| Shenzhen Sinhigh Technology Co., Limited | Private company limited by shares | Live |
| Sino Rise Industry Co., Limited | Private company limited by shares | Live |
| SINCERE FAIR HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| BEST SINCERE PAN ASIA LIMITED | Private company limited by shares | Live |
| GLOBAL SINCERE LIMITED | Private company limited by shares | Live |
| SINOVE ELECTRONICS (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| SINOPRO ASIA LIMITED | Private company limited by shares | Live |
| Sincere Consulting Limited | Private company limited by shares | Live |
| Sino Systems Technologies Limited | Private company limited by shares | Live |
| Sino-Coop Consultancy Limited | Private company limited by shares | Live |
| Sino-main Consultancy Limited | Private company limited by shares | Live |
| Sinobeam Holdings Limited | Private company limited by shares | Live |
| Sino Shore Technologies Limited | Private company limited by shares | Live |
| WING SING NEW ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINO VALUE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| 168 Sino Limited | Private company limited by shares | Live |
| SINO SYSTEM (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINO PURE LIMITED | Private company limited by shares | Live |
| SINO CROWN MANAGEMENT LIMITED | Private company limited by shares | Live |
| SINO PACKING INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| RISING SINCERE LIMITED | Private company limited by shares | Live |
| BRIGHT SINO CENTURY LIMITED | Private company limited by shares | Live |
| SINOTEK INVESTMENTS GROUP LIMITED | Private company limited by shares | Live |
| Yau Sing E&M Limited | Private company limited by shares | Live |
| SINOMEDIARY GROUP LIMITED -THE- | Private company limited by shares | Live |
| SING SHUI TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| HIN SING TRADING GROUP LIMITED | Private company limited by shares | Live |
| SINO PACIFIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINO PEACE LIMITED | Private company limited by shares | Live |
| SINO K TRADE CO., LIMITED | Private company limited by shares | Live |
| Sing Ho Engineering Company Limited | Private company limited by shares | Live |
| SINOLION CAPITAL CONSULTANCY LIMITED | Private company limited by shares | Live |
| Sino Empire International (HK) Limited | Private company limited by shares | Live |
| SINO MARINE EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| SINO SUCCESS GLOBAL LIMITED | Private company limited by shares | Live |
| SINUOWEI CO., LIMITED | Private company limited by shares | Live |
| SINO TRACKER LIMITED | Private company limited by shares | Live |
| Yat Sing Logistic Co., Limited | Private company limited by shares | Live |
| Singja Industry Co., Limited | Private company limited by shares | Live |
| MING SING LIMITED | Private company limited by shares | Live |
| Tai Sing Company Limited | Private company limited by shares | Live |
| Sino-J Mining Group Limited | Private company limited by shares | Live |
| Hing Sing Engineering Limited | Private company limited by shares | Live |
| Sincere Trade Group Limited | Private company limited by shares | Live |
| Sinocigs Technology Limited | Private company limited by shares | Live |
| Brave Sincere Business Limited | Private company limited by shares | Live |
| SINO STAR INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SINO CERAMICS COMPANY LIMITED | Private company limited by shares | Live |
| SINGTO TRADING LIMITED | Private company limited by shares | Live |
| SINO ISOURCING INTERNATIONAL HK CO., LIMITED | Private company limited by shares | Live |
| KONG SING YEUNG TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK SINCYI TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Sine Software Technology Limited | Private company limited by shares | Live |
| LUK SING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINO ALLIANCE TRADING (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINO ELEGANT TRADING LIMITED | Private company limited by shares | Live |
| SINO NICE TRADING LIMITED | Private company limited by shares | Live |
| SINOMAX LIMITED | Private company limited by shares | Live |
| SINO DYNAMIC LIMITED | Private company limited by shares | Live |
| SPEED SINKWARE COMPANY LIMITED | Private company limited by shares | Live |
| SINO HONOUR INVESTMENT LIMITED | Private company limited by shares | Live |
| SINOCREAT IMPORT & EXPORT CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SINO LOGIC RESOURCES LIMITED | Private company limited by shares | Live |
| SINDO GROUP (HK) SHARE CO., LIMITED | Private company limited by shares | Live |
| Ningbo Sino-Smart Industry Co., Limited | Private company limited by shares | Live |
| SINO BEST TRADE LIMITED | Private company limited by shares | Live |
| MAN SING CORPORATION LIMITED | Private company limited by shares | Live |
| SINAI MOON COMPANY LIMITED | Private company limited by shares | Live |
| Sino-german Joint Investment Group (Share) Limited | Private company limited by shares | Live |
| SINO LANKA BUSINESS ASSOCIATION LIMITED | Private company limited by shares | Live |
| Sincere Power Co. Limited | Private company limited by shares | Live |
| SINHO SINDE LIMITED | Private company limited by shares | Live |
| Sincere Trader Limited | Private company limited by shares | Live |
| SINGSON RUBBER INDUSTRIAL GROUP CO., LIMITED | Private company limited by shares | Live |
| SINO SMART (CHINA) LIMITED | Private company limited by shares | Live |
| SINO SOLUTIONS INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SUN WAH SING ENGINEERING LIMITED | Private company limited by shares | Live |
| SINO FINANCE GLOBAL INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| SINGWELL FINANCE COMPANY LIMITED | Private company limited by shares | Live |
| SING SIU ENTERPRISES INVESTMENT LIMITED | Private company limited by shares | Live |
| Ka Sing Company Limited | Private company limited by shares | Live |
| Wing Sing Restaurant Company Limited | Private company limited by shares | Live |
| SINBAD COFFEE ROASTERS LIMITED | Private company limited by shares | Live |
| SINOMACHINERY ENTERPRISE LIMITED | Private company limited by shares | Live |
| HK SINO-CONSULTING LIMITED | Private company limited by shares | Live |
| Tak Sing Logistic Service Limited | Private company limited by shares | Live |
| SINO HEALTH INDUSTRY INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| Sino-Dan Tech (HK) Co., Limited | Private company limited by shares | Live |
| SINO ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINCERE TONE LIMITED | Private company limited by shares | Live |
| Sino Hope Times Group Company Limited | Private company limited by shares | Live |
| SINO ART PRAISE MEDIA COMPANY LIMITED | Private company limited by shares | Live |
| SINO BREEDING INVESTMENT MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| SINOPIA TRADING COMPANY LIMITED | Private company limited by shares | Live |