| Prodigy Communication System Limited | Private company limited by shares | Live |
| COMMUNICATION SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| ADVANCED COMMUNICATION & AUTOMATION SYSTEMS LIMITED | Private company limited by shares | Live |
| PDI COMMUNICATION SYSTEMS (HK) LIMITED | Private company limited by shares | Live |
| Lexifone Communication Systems Limited | Private company limited by shares | Live |
| TACSYSTEM COMMUNICATION LIMITED | Private company limited by shares | Live |
| TACTICS COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| China Taekwon-Do Culture Communication Co., Limited | Private company limited by shares | Live |
| TAESANG COMMUNICATION LIMITED | Private company limited by shares | Live |
| TAIAN GLOBAL COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| TAICOM COMMUNICATION LIMITED | Private company limited by shares | Live |
| DAWEI COMMUNICATION TAIWAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TANGWEN COMMUNICATION & MEDIA LIMITED | Private company limited by shares | Live |
| Mega Target Communication Limited | Private company limited by shares | Live |
| T.C.L. COMMUNICATION (HK) LIMITED | Private company limited by shares | Live |
| T.C.L. COMMUNICATION (INT'L) LIMITED | Private company limited by shares | Live |
| TEAMAX COMMUNICATION HK COMPANY LIMITED | Private company limited by shares | Dissolved |
| HUA JUN COMMUNICATION TECH. CO. LIMITED | Private company limited by shares | Dissolved |
| I TECH COMMUNICATION HK LIMITED | Private company limited by shares | Live |
| BROADWIN TECH COMMUNICATION LIMITED | Private company limited by shares | Live |
| CHUNG SUN TECH COMMUNICATION GROUP LIMITED | Private company limited by shares | Live |
| NEW COMMUNICATION TECH CO., LIMITED | Private company limited by shares | Live |
| Fast Communication Tech Limited | Private company limited by shares | Live |
| KYS COMMUNICATION TECH. (HK) GROUP LIMITED | Private company limited by shares | Live |
| SUNRISE COMMUNICATION TECH INT'L LIMITED | | Live |
| UJOY COMMUNICATION TECH CO., LIMITED | Private company limited by shares | Live |
| WEICHUANGLI COMMUNICATION (HK) TECH LIMITED | Private company limited by shares | Dissolved |
| XGIGA COMMUNICATION TECH CO., LIMITED | Private company limited by shares | Dissolved |
| YUNTION COMMUNICATION TECH LIMITED | | Live |
| HK ZHIXIN COMMUNICATION TECH LIMITED | Private company limited by shares | Live |
| TECH-IN COMMUNICATION (HK) CO., LIMITED | Private company limited by shares | Live |
| Listen Techlogy Communication Co., Limited | | Live |
| COMMUNICATION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TECHNOLOGIES & COMMUNICATION LIMITED | Private company limited by shares | Live |
| ADVANCED COMMUNICATION & TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Anywave Communication Technologies (hk) Limited | Private company limited by shares | Live |
| ASIA COMMUNICATION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| REACHER COMMUNICATION TECHNOLOGIES (HK) CO., LIMITED | Private company limited by shares | Live |
| BEST GLORY TECHNOLOGIES (COMMUNICATION) LIMITED | Private company limited by shares | Dissolved |
| M.C.L. COMMUNICATION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| PRECISION TECHNOLOGIES (COMMUNICATION) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHENBO COMMUNICATION TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| ALL STAR COMMUNICATION TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| TODAY TECHNOLOGIES (COMMUNICATION) COMPANY LIMITED | Private company limited by shares | Dissolved |
| United Communication Technologies Company Limited | Private company limited by shares | Dissolved |
| 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 |