| ALTEC LIMITED | Private company limited by shares | Live |
| ALTEC ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ALTEC MACHINERY ENTERPRISE LIMITED | Private company limited by shares | Live |
| ALTEC RESEARCH COMPANY LIMITED | Private company limited by shares | Live |
| Altec Scientific Limited | Private company limited by shares | Live |
| Altec Digital System Limited | Private company limited by shares | Live |
| ALTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| ALTECH COMPANY LIMITED | Private company limited by shares | Live |
| ALTECH MEDSYS LIMITED | Private company limited by shares | Live |
| ALTECH-HK COMPANY LIMITED | Private company limited by shares | Dissolved |
| AIKE ALTECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Altecho Marine Systems Co., Limited | Private company limited by shares | Live |
| ALTECO LIMITED | Private company limited by shares | Live |