| MKS ASSOCIATES (QS) LIMITED | Private company limited by shares | Dissolved |
| Q.S. (AUST.) SOURCING LIMITED | Private company limited by shares | Dissolved |
| QSAII SYSTEMS LIMITED | Private company limited by shares | Live |
| ITALY QSAMARNI GARMENT COMPANY LIMITED | | Live |
| QSA-MORTIBOYS LIMITED | Private company limited by shares | Dissolved |
| Q.S.C. RESTAURANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Q.S.C. RESTAURANT COMPANY LIMITED | Private company limited by shares | Live |
| Qscala Technology Limited | | Live |
| QScapital Limited | Private company limited by shares | Live |
| QSciences HK Limited | Private company limited by shares | Live |
| 5d QSdimX Limited | Private company limited by shares | Live |
| Q.S.E. LIMITED | Private company limited by shares | Dissolved |
| Qserve International HK Limited | Private company limited by shares | Live |
| QSEVEN Company Limited | | Live |
| QSHARE LIMITED | Private company limited by shares | Live |
| QSHARE HOLDING LIMITED | Private company limited by shares | Live |
| QSHEN TRADE LIMITED | Private company limited by shares | Live |
| Qsheng Trade Co., Limited | | Live |
| HK QSHENG INDUSTRY LIMITED | Private company limited by shares | Live |
| HK QSHENG TRADE LIMITED | Private company limited by shares | Live |
| Q-SICHER CHILDCARE LIMITED | Private company limited by shares | Dissolved |
| QSJZ TRADING LIMITED | | Live |
| Q-SKINSCIENCE HK, LIMITED | Private company limited by shares | Live |
| QSLAND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QSLINK LIMITED | Private company limited by shares | Live |
| QSLP LIMITED | Private company limited by shares | Live |
| QSMART INT LIMITED | Private company limited by shares | Live |
| Q-SMART AROMA LIMITED | Private company limited by shares | Dissolved |
| Q-SMART GREEN ENERGY LIMITED | Private company limited by shares | Live |
| Qsolar Limited | Private company limited by shares | Live |
| Q-SOLAR LIMITED | | Live |
| QSOLAR GLOBAL COMPANY LIMITED | | Live |
| QSOUND ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| QSOUND ASIA ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| Q-SOURCE LIMITED | Private company limited by shares | Dissolved |
| Qspan Entertainment Services Limited | Private company limited by shares | Dissolved |
| QSPHARMA COMPANY LIMITED | Private company limited by shares | Live |
| QSP(HONGKONG)CO., LIMITED | Private company limited by shares | Live |
| QSPI TENFORONE HK LIMITED | Private company limited by shares | Live |
| QSQCT TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Hongkong (International) Hua Tuo Spontaneous Wuqinxi QSRs Co., Limited | Private company limited by shares | Live |
| QSSC Limited | Private company limited by shares | Live |
| QSSD LIMITED | | Live |
| QSSG INVESTMENT LIMITED | Private company limited by shares | Live |
| QSSIG Hong Kong Limited | Private company limited by shares | Live |
| QSTAIN HONG KONG LIMITED | Private company limited by shares | Live |
| Q-STAR LIMITED | Private company limited by shares | Dissolved |
| QSTAR TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| QSTAR INTERNATIONAL EDUCATION TECHOLOGIES GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| QSTAR TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| Q-STAR (H.K.) LIMITED | Private company limited by shares | Live |
| HONGKONG QSTAR BUSINESS MANAGEMENT CONSULTANT CO., LIMITED | Private company limited by shares | Live |
| QSTAR STATIONERY CO., LIMITED | Private company limited by shares | Live |
| Q-Star Electrical Tech Co., Limited | Private company limited by shares | Live |
| QSTAR TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| QSTECH DEVELOPING LIMITED | Private company limited by shares | Live |
| SWE Q-STEEL LIMITED | Private company limited by shares | Live |
| QSTEEL FOUNDRY GROUP LIMITED | Private company limited by shares | Live |
| QSTEEL (HONGKONG) MACHINE MANUFACTURE CO., LIMITED | Private company limited by shares | Dissolved |
| CHINA Q-STONES LIMITED | Private company limited by shares | Live |
| CHINA Q-STONES GROUP LIMITED | Private company limited by shares | Live |
| CHINA Q-STONES GROUP HOLDING LIMITED | Private company limited by shares | Live |
| Qstring-HK Limited | Private company limited by shares | Live |
| HK QSTS TRADE LIMITED | Private company limited by shares | Live |
| SHANTOU QSTTOYS CO., LIMITED | Private company limited by shares | Live |
| QSTY Tech Limited | Private company limited by shares | Live |
| CHINA QSUPER IMPORT & EXPORT CO., LIMITED | Private company limited by shares | Live |
| QSupers Limited | Private company limited by shares | Live |
| Q-Supplies Limited | Private company limited by shares | Live |
| Q-surance Limited | Private company limited by shares | Live |
| QSWY INTERNATIONAL INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| QSXS LIMITED | | Live |
| Q'SYS ASIA LIMITED | Private company limited by shares | Dissolved |