| Company Name | Type | Status |
|---|---|---|
| ROSENBERG COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOWARD ROSENBERG HK LIMITED | Private company limited by shares | Live |
| ROSENBERGER FIBER OPTIC CABLE SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ROSENBERGER (H.K.) COMPANY LIMITED | Private company limited by shares | Live |
| ROSENBERGER INTERCONNECT (H.K.) COMPANY LIMITED | Live |