| Ocean Controls Limited | Private company limited by shares | Live |
| Phoenix Controls Limited -The- | Private company limited by shares | Live |
| RICHMIND CONTROLS LIMITED | Private company limited by shares | Live |
| Servo Controls Limited | Private company limited by shares | Live |
| TRIATEK LAB CONTROLS LIMITED | Private company limited by shares | Dissolved |
| WESTERN PACIFIC CONTROLS LIMITED | Private company limited by shares | Live |
| CONTROLSEAL (CHINA) LIMITED | Private company limited by shares | Live |
| CONTROLSEAL VALVE CO., LIMITED | Private company limited by shares | Live |
| HONGKONG CONTROLSYS ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| ControlTech Supply Limited | | Live |
| Contronus Limited | Private company limited by shares | Live |
| Mosquito ControTech Limited | Private company limited by shares | Live |
| CONTRUAGENCIES LIMITED | Private company limited by shares | Dissolved |
| CON-TRUCKING COMPANY LIMITED | Private company limited by shares | Dissolved |
| FU ON CONTRUCTION MATERIALS LIMITED | Private company limited by shares | Live |
| Contsino Limited | Private company limited by shares | Live |
| Contson Enterprises Limited | Private company limited by shares | Dissolved |
| CONTSTAR LIMITED | Private company limited by shares | Live |
| CONTUNE INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CONTURA COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUEEN'S CONTURE LIMITED | Private company limited by shares | Dissolved |
| CONTWELL (HK) LIMITED | Private company limited by shares | Live |
| CONTWOOD LIMITED | Private company limited by shares | Live |