| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CETXP | Cemtrex Inc. - Series 1 Preferred Stock | US | NASDAQ |
| DCI | Donaldson Company, Inc. | US | NYSE |
| EGL | The Environmental Group Ltd | AU | ASX |
| PFTI | Puradyn Filter Technologies Inc | US | OTC |
| PRV | Porvair Plc | UK | LSE |
| DNZ | Donaldson Company Inc | DE | F |