| # | Name | Location | Applications |
|---|---|---|---|
| 1. | F. E. Frank Mayer | π©πͺ Bad Duerkheim, Germany | 1 |
| 2. | FEF Chemicals A/S | π©π° Koege, Denmark | 1 |
| 3. | FEF Chemicals A/S | π©π° Koge, Denmark | 1 |
| 4. | FEF GROUP PTY LTD | π¦πΊ Glenwood, Australia | 2 |
| 5. | FEF GROUP PTY LTD | π¦πΊ Glenwood, NSW, Australia | 1 |
| 6. | FEF3 Systems LLC | πΊπΈ Seattle, WA, United States | 1 |