| KINGTEL TELECOM DEVICE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| TELECOM DIGITAL LIMITED | Private company limited by shares | Live |
| TELECOM DIGITAL 2 LIMITED | Private company limited by shares | Live |
| DIGITAL TELECOM LIMITED | Private company limited by shares | Dissolved |
| DIGITAL TELECOM LIMITED | Private company limited by shares | Live |
| FIRST DIGITAL TELECOM LIMITED | Private company limited by shares | Dissolved |
| FUCOM DIGITAL TELECOM GROUP LIMITED | Private company limited by shares | Live |
| DIGITEK TELECOM LIMITED | Private company limited by shares | Live |
| DIGITONE TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| DIRECT TELECOM LIMITED | Private company limited by shares | Live Commenced dormancy on 16-Dec-2015 |
| Telecom Distribution Company Limited | Private company limited by shares | Live |
| AZ Telecom Distribution Limited | Private company limited by shares | Live |
| Telecom Elektronik Distribution Limited | Private company limited by shares | Live |
| SNP TELECOM SYSTEM DISTRIBUTION LIMITED | Private company limited by shares | Dissolved |
| DIVULGE TELECOM LIMITED | Private company limited by shares | Live |
| DLEE TELECOM LIMITED | Private company limited by shares | Live |
| D-NET TELECOM LIMITED | Private company limited by shares | Dissolved |
| DONGBA TELECOM CO., LIMITED | Private company limited by shares | Dissolved |
| DONGHWA TELECOM CO., LIMITED | Private company limited by shares | Live |
| DONGXING TELECOM CO., LIMITED | Private company limited by shares | Live |
| DOUBLE APPLE TELECOM LIMITED | Private company limited by shares | Live |
| DRAGON TELECOM LIMITED | Private company limited by shares | Dissolved |
| DREAM TELECOM COMPANY LIMITED | Private company limited by shares | Live |
| D-TONG TELECOM CO., LIMITED | Private company limited by shares | Live |
| DUCK KEE TELECOM LIMITED | Private company limited by shares | Live |
| DURJA TELECOM LIMITED | Private company limited by shares | Dissolved |
| TELECOM DYNAMIC LIMITED | Private company limited by shares | Live |
| Dynamic Telecom Limited | Private company limited by shares | Live |
| DYNAMIX TELECOM LIMITED | Private company limited by shares | Live |
| EAGLE HARVEST TELECOM COMPANY LIMITED | Private company limited by shares | Live |
| EAGLE TELECOM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| EASSON TELECOM LIMITED | Public company limited by shares | Live |
| South East Asia Telecom Limited | Private company limited by shares | Dissolved |
| SOUTH EAST TELECOM CO., LIMITED | Private company limited by shares | Live |
| SEATTLE TELECOM & DATA ( FAR EAST ) LIMITED | Private company limited by shares | Dissolved |
| EAST SUNNY TELECOM LIMITED | Private company limited by shares | Live |
| EASTECH TELECOM LIMITED | Private company limited by shares | Dissolved |
| EASTERN TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW EASTERN TELECOM LIMITED | Private company limited by shares | Live |
| Eastern Telecom Limited | | Live |
| Eastone Telecom Trading Limited | Private company limited by shares | Dissolved |
| EASY TELECOM LIMITED | Private company limited by shares | Dissolved |
| EASY TELECOM LIMITED | | Live |
| Easytone Telecom Co., Limited | Private company limited by shares | Live |
| EDISON TELECOM LIMITED | Private company limited by shares | Dissolved |
| EINSTAR TRADE & TELECOM LIMITED | Private company limited by shares | Live |
| EKON TELECOM LIMITED | Private company limited by shares | Dissolved |
| JA ELEC & TELECOM (GROUP) LIMITED | Private company limited by shares | Dissolved |
| OSA TELECOM & ELECTRONIC LIMITED | Private company limited by shares | Live |
| YU ON TELECOM ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| TELECOM ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| FEEDER ELECTRONICS (TELECOM) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| HUNGKE TELECOM ELECTRONICS LIMITED | Private company limited by shares | Live |
| WONG'S ELECTRONICS TELECOM LIMITED | Private company limited by shares | Dissolved |
| E-LINK TELECOM LIMITED | Private company limited by shares | Dissolved |
| ELNOUHA Telecom Limited | Private company limited by shares | Live |
| ELYSIAN TELECOM LIMITED | Private company limited by shares | Live |
| HSS TELECOM & ENERGY LIMITED | Private company limited by shares | Live |
| ASENSE ENERGY & TELECOM LIMITED | Private company limited by shares | Live |
| TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| BS (TELECOM) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| KAM KIN TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| B & E TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| TIN FAI TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| WIN YIP TELECOM ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| TIN WAI TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| HO TIN TELECOM ENGINEERING LIMITED | | Live |
| NEW WIN TELECOM ENGINEERING LIMITED | | Live |
| BASE TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CABLEFFUSION TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CABLEFFUSION TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| CAPITAL TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Convey Telecom Engineering Limited | Private company limited by shares | Live |
| MHK ELECTRICAL & TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| GENERAL TELECOM ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MING HING TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| HONOR TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| SUN KONG TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| KWAN MING TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| LIANG JIA TELECOM ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAIN TECH TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| NEOTEL TELECOM ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| ONRICH ENGINEERING (TELECOM) LIMITED | Private company limited by shares | Live |
| PROGRAM TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| SUNNY TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| 3A TELECOM SYSTEMS AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| TEAMPOWER TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| TECHNIC (TELECOM) ENGINEERING LIMITED | Private company limited by shares | Live |
| TECHNO TELECOM ENGINEERING LIMITED | Private company limited by shares | Live |
| Gain Power Telecom Technology Engineering Co Limited | Private company limited by shares | Live |
| TECHWAVE TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| YAT TUNG TELECOM ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SUN TUNG TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| VECENT TELECOM ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Mei Ying Telecom Engineering Limited | | Live |
| TELECOM ENTERPRISE LIMITED | Private company limited by shares | Live |
| TELECOM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ENTONE TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| E-Pay Telecom Services HK Limited | Private company limited by shares | Dissolved |