| Sino Internet of Things Technology Co., Limited | Private company limited by shares | Live |
| SINO OCEAN ASIA LIMITED | Private company limited by shares | Live |
| HONG KONG SINO LIMITED | Private company limited by shares | Live |
| TOP SINO (H.K.) LIMITED | Private company limited by shares | Live |
| SINO SCHEME LIMITED | Private company limited by shares | Dissolved |
| SINO INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SINOPEAK INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Sino Africa Salt (HK) Limited | Private company limited by shares | Dissolved |
| SINO GROWTH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| YIU SING BAGS INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| SINO AGRO INGREDIENTS LIMITED | Private company limited by shares | Dissolved |
| WANG SING MEDICAL BEAUTY CENTRE LIMITED | Private company limited by shares | Dissolved |
| ANCIENT MEDICAL METHODS OF SINO ASSOCIATION LIMITED -THE- | Private company limited by shares | Live |
| SINOSTAR PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| Sinbad Trading Limited | Private company limited by shares | Live |
| SINO ASSET CAPITAL COMPANY LIMITED | Private company limited by shares | Live |
| SINO HEALTH CORPORATION LIMITED | Private company limited by shares | Dissolved |
| SINOCEAN MARINE CO., LIMITED | Private company limited by shares | Live |
| HONG KONG SINO TOP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINCERE TOURISM INDUSTRY INVESTMENT LIMITED | Private company limited by shares | Live |
| TIP-TOP SINO LIMITED | Private company limited by shares | Live |
| GRAND SINO HONG KONG GROUP LIMITED | Private company limited by shares | Dissolved |
| HO SING REFRIGERATOR LIMITED | Private company limited by shares | Dissolved |
| SINBO TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| EMPOWER SINO LIMITED | Private company limited by shares | Live |
| SINO NEW ENERGY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINGRAND INTERNATIONAL (H.K) CO., LIMITED | Private company limited by shares | Live |
| SINOCEAN INT'L INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SINOR CHEMICAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| SINO COMPANIES (HK) LIMITED | Private company limited by shares | Live |
| TIN FUNG SING INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Live |
| SINDAS LIMITED | Private company limited by shares | Dissolved |
| SINO-DEN LIMITED | Private company limited by shares | Live |
| HONG KONG SINRU INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| Sinonar Holding Limited | Private company limited by shares | Dissolved |
| MILLION SINO LIMITED | Private company limited by shares | Dissolved |
| KA SING CATERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sino Metal & Mineral Co. Limited | Private company limited by shares | Live |
| SINOK ELECTRON LIMITED | Private company limited by shares | Dissolved |
| SINOEX PAPER PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| SUCCESS SINO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINOTEC CENTURY TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Dah Sing Bird Nest Store Limited | Private company limited by shares | Live |
| SINO BRIGHT INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINO HILL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SINO MELODY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| TRINITY SINO RESOURCES LIMITED | Private company limited by shares | Dissolved |
| Sino Corp CPA Limited | Private company limited by shares | Live |
| SINO GEOTECH (HK) CO., LIMITED | Private company limited by shares | Live |
| WING SING ELECTRICAL ENGINEERING LIMITED | Private company limited by shares | Live |
| Hong Kong Sing Mei Technology Co Limited | Private company limited by shares | Live |
| SINMART HONGKONG LIMITED | Private company limited by shares | Live Commenced dormancy on 10-May-2016 |
| SinoTone Group Limited | Private company limited by shares | Live |
| YUK SING CATERING COMPANY LIMITED | Private company limited by shares | Live |
| SING FAT ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINO SALT GROUP LIMITED | Private company limited by shares | Live |
| SING MING (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINO-SMART DIGITAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SINOWORKS INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| TUNG SING TAI INTERNATIONAL TRADE LIMITED | Private company limited by shares | Live |
| SINO-LEADER MACHINERY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SINO CLEAN ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| Sinocap Investment Management Limited | Private company limited by shares | Live |
| Sinocap Asset Management Limited | Private company limited by shares | Live |
| YUEN SING INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINOPAC PLASTIC MACHINERY CO., LIMITED | Private company limited by shares | Live |
| Sino Micro Innovation Company Limited | Private company limited by shares | Dissolved |
| Sino Alliance Trading Limited | Private company limited by shares | Live |
| SINOUNION SHIPPING SERVICE LIMITED | Private company limited by shares | Live |
| SINOTEK ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| SINO SYSTEM LIMITED | Private company limited by shares | Live |
| SINO UNIVERSAL LIMITED | Private company limited by shares | Live |
| SINO ALPHA INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINO LINK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINO SOURCES TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINO CHANNEL INVESTMENT LIMITED | Private company limited by shares | Live |
| MING SING PROPERTY GROUP LIMITED | Private company limited by shares | Dissolved |
| SINCA LIMITED | Private company limited by shares | Dissolved |
| Sinolink Financial Consultancy Limited | Private company limited by shares | Live |
| Lai Sing Limited | Private company limited by shares | Live |
| SINODUSTRY INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| SINO NET MEDIA (HONG KONG) HOLDING LIMITED | Private company limited by shares | Live |
| YIELD SINO LIMITED | Private company limited by shares | Live |
| SING XIN HONG KONG ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| SINO VIEW COMPLEX LIMITED | Private company limited by shares | Live |
| EURO SINO TRADE LIMITED | Private company limited by shares | Live |
| SINO CARE ENTERPRISE MANAGEMENT LIMITED | Private company limited by shares | Live |
| SINO HI-TECH PRINTING & PACKING LIMITED | Private company limited by shares | Live |
| MASS SINO INVESTMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 11-Jul-2014 |
| SINO YIELD INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| SKY SINO INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SINO WORTH LIMITED | Private company limited by shares | Live |
| SINO TIMES ELECTRONICS GROUP LIMITED | Private company limited by shares | Live |
| HANG SING WINE COMPANY LIMITED | Private company limited by shares | Live |
| HOI SING LIMITED | Private company limited by shares | Dissolved |
| Sinotec Industrial Limited | Private company limited by shares | Live |
| SINO INDUSTRY ENTERPRISE LIMITED | Private company limited by shares | Live |
| SINO DIAMOND TRADING CO. LIMITED | Private company limited by shares | Live |
| Sinosia Leasing Management Limited | Private company limited by shares | Live |
| SINOTEC CORPORATION CO., LIMITED | Private company limited by shares | Live |