| SINTUS LIMITED | Private company limited by shares | Dissolved |
| SINDER GROUP CO., LIMITED | Private company limited by shares | Live |
| MASTER WING SING CHARITY FUND LIMITED | Company limited by guarantee | Live |
| YEUNG SING HONG TRADING LIMITED | Private company limited by shares | Live |
| SINOJET LIMITED | Private company limited by shares | Live |
| GRAND SINO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SINTOP LIMITED | Private company limited by shares | Live |
| SINO YEAR LIMITED | Private company limited by shares | Live |
| SINOTRANS SHIP MANAGEMENT LIMITED | Private company limited by shares | Live |
| SINO SPEED LIMITED | Private company limited by shares | Dissolved |
| SINO LINK INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| NAM SING COMMUNICATION CONSTRUCTION LIMITED | Private company limited by shares | Live |
| SINO EMPIRE CORPORATION LIMITED | Private company limited by shares | Live |
| SINO DRAGON ENTERPRISE (HK) LIMITED | Private company limited by shares | Dissolved |
| SINO AFRICA MINING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINOSTEEL EVER GLORY COMPANY LIMITED | Private company limited by shares | Live |
| SINO EUROPEAN INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINCERE TALENT LIMITED | Private company limited by shares | Dissolved |
| SINOLEAD MARINE LIMITED | Private company limited by shares | Live |
| CHINA WA SING INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| SINO WINNER TRADING LIMITED | Private company limited by shares | Live |
| SINGTON TIN BOX LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Mar-2010 |
| Hong Kong Juk Sing Group Limited | Private company limited by shares | Live |
| SINO CITIC LIMITED | Private company limited by shares | Live |
| SINO ENERGY AND RESOURCES, LIMITED | Private company limited by shares | Live |
| SINGS TRADING AND COMPANY LIMITED | Private company limited by shares | Live |
| GLOBAL SINO CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| SINOWRITE LIMITED | Private company limited by shares | Live |
| SINO SPIRIT MEDICAL LIMITED | Private company limited by shares | Live |
| SING TAT GROUP LIMITED | Private company limited by shares | Live |
| SINO ABLE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| LEADER SINO-HK LOGISTICS LIMITED | Private company limited by shares | Live |
| SINO MDA MEDICAL LIMITED | Private company limited by shares | Live |
| TOP SINO INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SMART SINO TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINOLONG INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINO VANTAGE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SINO VICTORY TRADING LIMITED | Private company limited by shares | Live |
| WING SING ELCTRONIC (HK) LIMITED | Private company limited by shares | Live |
| SINO ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| SINO-OCEAN GROUP HOLDING LIMITED | Public company limited by shares | Live |
| SINO PACIFIC (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SINO VICTOR INDUSTRIAL LIMITED | Private company limited by shares | Live |
| CHINA SINO (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SINO POWER LIMITED | Private company limited by shares | Live |
| SINORIVAGE COMPANY LIMITED | Private company limited by shares | Live |
| SINO LUCKY ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINO GIANT LIMITED | Private company limited by shares | Live |
| SINO PIONEER ASIA LIMITED | Private company limited by shares | Live |
| SINOCONT (HK) LIMITED | Private company limited by shares | Dissolved |
| SINOK HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SINOSUL INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SINOGO LIMITED | Private company limited by shares | Live Ceased dormancy on 28-Mar-2011 |
| SINO YANG HONG KONG LIMITED | Private company limited by shares | Live |
| SINO PRO TRADING LIMITED | Private company limited by shares | Live |
| SINOGOAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| Sino Sources Bag Manufacturer Limited | Private company limited by shares | Dissolved |
| FONDATION SINO-FRANCAISE D'ECHANGES ECONOMIQUES ET CULTURELS LIMITED | Private company limited by shares | Live |
| SINOEX LOGISTIC LIMITED | Private company limited by shares | Live |
| Hwa Sing Trading (Hong Kong) Limited | Private company limited by shares | Dissolved |
| SINO HAPPY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SINOTEAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINDO LOGISTICS CO., LIMITED | Private company limited by shares | Live |
| Sinotec Electronic Int'l Limited | Private company limited by shares | Live |
| SINO CONCEPT LIMITED | Private company limited by shares | Dissolved |
| SINO KING ASIA LIMITED | Private company limited by shares | Live |
| SINO ISLAND INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINO VICTORY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SING YU LIMITED | Private company limited by shares | Dissolved |
| SINO SUNNY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SING KWAN MEDIA (HK) LIMITED | Private company limited by shares | Live |
| SINERGIA LIMITED | Private company limited by shares | Live |
| SINO TECH MEDIA LIMITED | Private company limited by shares | Live |
| SINOCEAN SEAFOODS CO., LIMITED | Private company limited by shares | Live |
| HONG KONG SINO-WISH INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| SINOPOWER INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| SINO JOY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINO BRIGHT PROPERTIES LIMITED | Private company limited by shares | Live |
| SINO ORIENTAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| HOI SING INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINOCO INVESTMENT LIMITED | Private company limited by shares | Live |
| SINMAX INVESTMENT LIMITED | Private company limited by shares | Live |
| SINO BRIGHT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sino Merit Enterprise Limited | Private company limited by shares | Live |
| SINO KING TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINO CAPITAL TRADING LIMITED | Private company limited by shares | Live |
| SINO-BENEFIT (H.K) INVESTMENT GROUP HOLDING LIMITED | Private company limited by shares | Live |
| SINO INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| SINAVOR INC LIMITED | Private company limited by shares | Live |
| KONG SING ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SINOPAY (HONG KONG) LIMITED | Private company limited by shares | Live |
| WEI SING CONSTRUCTION (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINO CROWN TRADING LIMITED | Private company limited by shares | Dissolved |
| SINO HARVEST ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINOPLUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINNAM COSMETICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SING WA BUSINESS LIMITED | Private company limited by shares | Dissolved |
| Sino Global Investment Limited | Private company limited by shares | Live |
| SINOC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SINO INTERNATIONAL MARKETING LIMITED | Private company limited by shares | Dissolved |