| IDRA DRILLING EQUIPMENT HOLDING LIMITED | Private company limited by shares | Live |
| IDRA INTERNATIONAL LIMITED | Private company limited by shares | Live |
| IDRA INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| IDRA PARTNERS LIMITED | Private company limited by shares | Live |
| I-DRAGON LIMITED | Private company limited by shares | Live |
| I-DRAGON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| iDragon Investment Advisor Limited | Private company limited by shares | Live |
| I-DRAGON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| IDRATA.HK LIMITED | Private company limited by shares | Live |