| Atergen Limited | Private company limited by shares | Live |
| Ateria Hong Kong Company Limited | Private company limited by shares | Live |
| A'TERIOR STUDIO LIMITED | Private company limited by shares | Live |
| A-Ternus Limited | | Live |
| ATERON LIMITED | Private company limited by shares | Dissolved |
| Aterra Limited | Private company limited by shares | Live |
| ATERSA HONG KONG LIMITED | Private company limited by shares | Live |
| ATERSON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Atery Tech Limited | Private company limited by shares | Live |