| COMMTECH LIMITED | Private company limited by shares | Dissolved |
| COMMTECH (ASIA) LIMITED | Private company limited by shares | Live |
| CHINA COMM-TECH LIMITED | Private company limited by shares | Dissolved |
| PACIFIC COMM-TECH DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| COMM-TECH ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| COMMTECH ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| E-PLUS COMMTECH LIMITED | Private company limited by shares | Dissolved |
| COMMTECH HOLDINGS LIMITED | Private company limited by shares | Live |
| Kaizen Commtech (Hong Kong) Company Limited | | Live |
| COMMTECH LATAM LIMITED | Private company limited by shares | Live |
| COMMTECH SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| COMMTECH TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| YUANMEI (HK) COMM&TECH CO., LIMITED | Private company limited by shares | Live |