| Company Name | Type | Status |
|---|---|---|
| ROYAL-TECH ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ROYALTECH INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ROYAL-TECH MACHINERY COMPANY LIMITED | Private company limited by shares | Live |
| QINGDAO ROYAL-TECH MACHINERY COMPANY LIMITED | Private company limited by shares | Live |