| A-TEN LIMITED | Private company limited by shares | Dissolved |
| A-TEN ASSOCIATES LIMITED | Private company limited by shares | Live |
| ATEN BUSINESS COMPANY LIMITED | Private company limited by shares | Live |
| A-TEN COLLEGE LIMITED | Private company limited by shares | Dissolved |
| ATEN COMPUTERS LIMITED | Private company limited by shares | Dissolved |
| ATEN ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Aten Global Limited | Private company limited by shares | Live |
| A.T.E.N. HOLDING LIMITED | Private company limited by shares | Live |
| A-TEN PRODUCTIONS LIMITED | Private company limited by shares | Live |
| ATEN TECH LIMITED | Private company limited by shares | Live |
| ATEN TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| ATEN SOLAR SYSTEM AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ATEN TRADING LIMITED | Private company limited by shares | Live |
| HK A-TEN TRADING LIMITED | Private company limited by shares | Live |
| ATENA LIMITED | Private company limited by shares | Live |
| HONGKONG ATENO DESIGN INTERNATIONAL CONSULTANT COMPANY LIMITED | Private company limited by shares | Live |