Buyer's Guide
| Company | Location | Company Type |
|---|---|---|
| Mac Leads | East Stroudsburg, Pennsylvania, United States | Manufacturer |
| Madden Manufacturing, Inc. | Elkhart | Manufacturer |
| Magnatrol Valve Corp. | Hawthorne | Manufacturer |
| Magnetics Division, Global Equipment Mktg. Inc. | Boca Raton | Manufacturer |
| Magnetrol International | Downers Grove | Manufacturer |
| Mar Cor Purificiation | Lowell | Manufacturer |
| Markel Corporation | Plymouth Meeting | Manufacturer |
| Marlo Incorporated | Racine | Manufacturer |
| Martel Electronics Corp. | Derry | Manufacturer |
| Masar Technologies, Inc. | Tucson | Manufacturer |
| Master Water Conditioning Corp. | Pottstown, Pennsylvania, United States | Manufacturer |
| Matterhorn Filter Corp | Gardena | Manufacturer |
| Mattson/Witt Precision Products Inc | Barrington | Manufacturer |
| Mazzei Injector Company, LLC | Bakersfield | Manufacturer |
| McBrady Engineering, Inc. | Joilet | Manufacturer |
| McClean Anderson | Schofield | Manufacturer |
| McCrometer | Hemet | Manufacturer |
| Mdflag Div., Met-Pro Corp. | Harleysville | Manufacturer |
| Measurement Technologies, Inc. | Redmond | Manufacturer |
| Medora Corporation | Dickinson, North Dakota, United States | Manufacturer |
| Melstream Industries Inc. | Doral | Manufacturer |
| Membrana - Celgard LLC | Charlotte | Manufacturer |
| Membranes International Inc. | Glen Rock | Manufacturer |
| Memprotec Inc. | Chesterville | Manufacturer |
| Met-Pro Global Pump Solutions | Telford | Manufacturer |
