| WINTEL COMMUNICATION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| IDT COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HIP WO COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DSC COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| J&Y COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TECHNOLOGY AND COMMUNICATION LIMITED | Private company limited by shares | Live |
| COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CSJ COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HK YTD COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Red Communication Technology Co. Limited | Private company limited by shares | Live |
| Communication Technology HK Limited | Private company limited by shares | Live |
| WEN DA COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| COMMUNICATION WAY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Q2 COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SUK COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| New Air Communication Technology Limited | Private company limited by shares | Live |
| LK COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Lin Te Communication Technology Limited | Private company limited by shares | Live |
| Ins Communication Technology Limited | | Live |
| ADVANCED COMMUNICATION TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Anda Communication Technology (H.K) Co., Limited | Private company limited by shares | Live |
| ANLAI NETWORK COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| AQUARIES ELECTRONIC & COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ASCENT COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ASIA COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ASIA COMMUNICATION & TECHNOLOGY CO. LIMITED | Private company limited by shares | Dissolved |
| Asia Communication Technology Limited | Private company limited by shares | Live |
| POWER ASIA COMMUNICATION TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| Awuji Communication Technology Company Limited | Private company limited by shares | Dissolved |
| HK BENPARR COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Best Communication Technology Limited | Private company limited by shares | Live |
| Brilliantel Communication Technology Co., Limited | Private company limited by shares | Live |
| CATEC TECHNOLOGY AND COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| CENTER NET COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| COMMUNICATION CENTRE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CENTURY COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK CEZON COMMUNICATION SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CFTX Communication Technology Limited | Private company limited by shares | Live |
| CHINA COMMUNICATION TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| CHINA BEST COMMUNICATION TECHNOLOGY (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CENTURY CHINA COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| China Communication Data Technology Limited | Private company limited by shares | Live |
| CHINA GUOTONG COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA OPTIC COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHIWEI COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHUNG KIU COMMUNICATION TECHNOLOGY CO. LIMITED | Private company limited by shares | Dissolved |
| CHUNGYUAN COMMUNICATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| TIA COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| TEM COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ZI JIN COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| LBD COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| TOP COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ACE COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SH COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| GC COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| YI XIN COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Ubo Communication Technology Co., Limited | Private company limited by shares | Live |
| HK Tek Communication Technology Co., Limited | Private company limited by shares | Live |
| Elf Cat Communication Technology Co., Limited | Private company limited by shares | Live |
| RFT COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SOC COMMUNICATION TECHNOLOGY CO., LIMITED | | Live |
| Y2Y COMMUNICATION TECHNOLOGY CO., LIMITED | | Live |
| Chinavei Communication Technology Co., Limited | Private company limited by shares | Live |
| Dacheng Communication Technology Co., Limited | | Live |
| A.J COMMUNICATION DIGITAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Dingli Technology Communication Co., Limited | | Live |
| ETENT COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| GOSPELL COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| TEK COMMUNICATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| HJG COMMUNICATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Yan yee communication technology (HK) Co., Limited | Private company limited by shares | Live |
| HK HOLLYRICH COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HONGFUSHENG COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HuaJiaYuan Communication Technology Co., Limited | Private company limited by shares | Live |
| MAMBOW COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| 6 Point Communication Technology Co., Limited | Private company limited by shares | Live |
| REEKO COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| RUILAIBO COMMUNICATION TECHNOLOGY CO., LIMITED | | Live |
| Sany Communication Technology Co., Limited | Private company limited by shares | Live |
| SHENZHEN WDT COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SHMA COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Synaptic Communication Technology Co., Limited | | Live |
| VPLUS COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Xinhua Communication Technology Co., Limited | Private company limited by shares | Live |
| CHINA COACHING TECHNOLOGY CULTURE COMMUNICATION LIMITED | Private company limited by shares | Live |
| COMTECH COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| COMTECH COMMUNICATION TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Creative Communication Technology Cooperation HK Limited | Private company limited by shares | Live |
| Csenvi technology communication Limited | Private company limited by shares | Live |
| DATA COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DEEPHONE COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DIFONE COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| DIGI COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| DIGITAL COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DIGITAL COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DingYu Communication Technology Co., Limited | | Live |
| Dodo Communication Technology Limited | Private company limited by shares | Dissolved |
| DoDo Communication Technology International Limited | Private company limited by shares | Dissolved |
| EASY PASS TECHNOLOGY COMMUNICATION LIMITED | Private company limited by shares | Dissolved |