| CONCERN LIMITED | Private company limited by shares | Dissolved |
| CONCERN LIMITED | Private company limited by shares | Dissolved |
| CENTRE FOR THE CONCERN OF DIABETES LIMITED | Private company limited by shares | Dissolved |
| GRAND CONCERN LIMITED | Private company limited by shares | Dissolved |
| Diabetes Concern Group Limited | Company limited by guarantee | Live |
| HONGKONG SITONG CULTURE ART BOOK CONCERN LIMITED | Private company limited by shares | Live |
| EVEREST TECHNOLOGY AND TRADE CONCERN LIMITED | Private company limited by shares | Live |
| WEALTHY CONCERN TRADING LIMITED | Private company limited by shares | Dissolved |
| CONCERNED ASIANS AND FRIENDS LIMITED | Company limited by guarantee | Dissolved |
| WELL CONCERNED LIMITED | Private company limited by shares | Dissolved |