| Company Name | Type | Status |
|---|---|---|
| WOLTAN LIMITED | Private company limited by shares | Dissolved |
| WOLTECH LIMITED | Private company limited by shares | Dissolved |
| D. WOLTER COMPANY LIMITED | Private company limited by shares | Dissolved |
| Wolter and Yu Limited | Live | |
| WOLTER ASIA LIMITED | Private company limited by shares | Live |
| CARL WOLTER AND COMPANY LIMITED | Private company limited by shares | Dissolved |
| WOLTZ LIMITED | Private company limited by shares | Dissolved |