| Company Name | Type | Status |
|---|---|---|
| CESI Energy Solutions Incorporated Limited | Private company limited by shares | Dissolved |
| CESI (NOMINEES) LIMITED | Private company limited by shares | Live |
| CESINCY Limited | Private company limited by shares | Live |
| CESING COMPANY LIMITED | Private company limited by shares | Live |
| Cesium Tek Hongkong Limited | Private company limited by shares | Live |