| ESTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| ESTON LIMITED | Private company limited by shares | Live |
| E-STONE LIMITED | Private company limited by shares | Live |
| ESTONE GROUP (HONG KONG) LIMITED | Private company limited by shares | Live |
| ESTONE INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| Estone Industrial Co., Limited | Private company limited by shares | Live |
| Estone Electronics (Hong Kong) Limited | Private company limited by shares | Live |
| ESTONE ASIA TRADING LIMITED | Private company limited by shares | Live |
| ESTONE-DIGITAL CO., LIMITED | Private company limited by shares | Dissolved |
| ESTONGS LIMITED | | Live |
| ESTONIA LIMITED | Private company limited by shares | Live |
| ESTONS LIMITED | Private company limited by shares | Live |