| Maag Pump Systems Inc United States |
| MAST Carbon International Ltd United Kingdom |
| Membrana United States |
| METCOM Inc. United States |
| MICRODYN-NADIR GmbH Germany |
| MKG Equipamentos Ltd. Brazil |
| MOGUL NONWOVENS Turkey |
| Mott Corporation United States |
| MTB Technologies Poland |
| Multifilter Russian Federation |