| Company Name | Type | Status |
|---|---|---|
| R. E. DIETZ COMPANY LIMITED | Private company limited by shares | Live |
| DIETZ ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| DIETZ GROUP LIMITED | Private company limited by shares | Dissolved |
| DIETZ INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DIETZ TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |