| Besigheid | Gestig | Kontakte |
|---|---|---|
| Phonak Head Office | 1947 | - |
| Foundation for Children with Hearing Loss | 1997 | 1 |
| Ear Institute I Oorinstituut: Queenswood | - | - |
| H A S S Industrial (Pty) Ltd | - | - |
| H A S S Sa | - | - |
| H A S S Southern Africa (Pty) Ltd | - | - |
| Van Der Merwe A L | - | - |
| Rust A | - | - |
| The Ear Institute | - | - |
| Da Rocha N B | - | - |
| Hugo N | - | - |
| Izeboud J | - | - |
| Oosthuizen I | - | - |
| Pretorius Cornelis | - | - |
| Schulze B G | - | - |
| Stephan H R | - | - |
| Van Der Merwe C J | - | - |
| H.A.S.S. Medical | - | - |
| Hansaton | - | - |
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