| C.T.E. CONSTRUCTION CONSULTANT LIMITED | Private company limited by shares | Live |
| CTEA LIMITED | Private company limited by shares | Live |
| CT-EASE HOLDING LIMITED | Private company limited by shares | Live |
| CT-EASE BIOTECHNOLOGIES (ASIA PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| CTEC LIMITED | Private company limited by shares | Dissolved |
| CTEC LIMITED | Private company limited by shares | Dissolved |
| CTEC LIMITED | Private company limited by shares | Live |
| CTEC Communication Limited | | Live |
| CTEC ELECTRONICS (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| C-TEC ELECTRONICS HONG KONG LIMITED | Private company limited by shares | Live |
| CTEC GROUP CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CTEC INDUSTRIAL SOLUTION LIMITED | Private company limited by shares | Dissolved |
| C-TEC PRECISION COMPANY LIMITED | Private company limited by shares | Dissolved |
| CTEC TRADING GROUP LIMITED | Private company limited by shares | Dissolved |
| C-TECH LIMITED | Private company limited by shares | Live |
| GLZ C-Tech HK Limited | Private company limited by shares | Live |
| C-TECH ASIA LIMITED | Private company limited by shares | Dissolved |
| C-TECH SOLUTIONS CO., LIMITED | Private company limited by shares | Live |
| C-TECH DEVELOP LIMITED | Private company limited by shares | Live |
| Ctech Electronic Limited | Private company limited by shares | Live |
| C-Tech Elevations Limited | Private company limited by shares | Live |
| C-TECH ENGINEERING LIMITED | Private company limited by shares | Live Commenced dormancy on 05-May-2005 |
| C-Tech (Finance) Limited | Private company limited by shares | Live |
| C-TECH GLOBAL HK LIMITED | Private company limited by shares | Live |
| Ctech Global Limited | | Live |
| C-Tech Elevations (Hollywood) Limited | | Live |
| CTECH INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| C-Tech Laundry Investment Company Limited | Private company limited by shares | Live |
| C-Tech Laundry (0003) Investment Company Limited | Private company limited by shares | Live |
| CTECHI GROUP LIMITED | Private company limited by shares | Live |
| C-TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CTEF LIMITED | Private company limited by shares | Live |
| CTEK ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| C-tek electronics (HK) Limited | Private company limited by shares | Live |
| NEW C-TEK (HK) LIMITED | Private company limited by shares | Dissolved |
| CTEK HONG KONG LIMITED | Private company limited by shares | Live |
| C-TEK INTERNATIONAL HK LIMITED | Private company limited by shares | Live |
| Ctek Technology Limited | Private company limited by shares | Live |
| CTEK TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Ctek International Technology Limited | Private company limited by shares | Live |
| CTEK Technology Service HK Limited | Private company limited by shares | Live |
| CT-ELEC LIMITED | Private company limited by shares | Live |
| CTEnvironment Limited | Private company limited by shares | Live |
| CTERA NETWORKS LIMITED | Private company limited by shares | Dissolved |
| CTESIBIUS (HK) INDUSTRIAL LIMITED | Private company limited by shares | Live |
| C-TEST HK Limited | Private company limited by shares | Live |
| SHENZHEN CTE-TECH CO., LIMITED | Private company limited by shares | Live |
| C-TEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| C-TEX LIMITED | Private company limited by shares | Live |
| C-TEX LIMITED | Private company limited by shares | Live |
| CTEX HOMETEXTILE CO., LIMITED | Private company limited by shares | Live |