| Company Name | Type | Status |
|---|---|---|
| ORTO LIMITED | Live | |
| ORTO INDUSTRIES CO. LIMITED | Private company limited by shares | Live |
| ORTOFON LIMITED | Private company limited by shares | Dissolved |
| ORTOLAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTOLUX LIMITED | Private company limited by shares | Live |
| ORTON LIMITED | Private company limited by shares | Dissolved |
| ORTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTONA COMPANY LIMITED | Private company limited by shares | Dissolved |