| MTMain Tech Industrial Services | Reserve | LA | — | ◇ UNVERIFIED |
| MMMalbert & Mitchell Grinding Services INC | La Habra | CA | — | ◇ UNVERIFIED |
| MHMann & Hummel USA INC. | South Bend | IN | — | ◇ UNVERIFIED |
| MMapei | Eagan | MN | — | ◇ UNVERIFIED |
| MIMar-bal INC | Chagrin Falls | OH | — | ◇ UNVERIFIED |
| MIMar-bal INC. (0243112019) | Painesville | OH | — | ◇ UNVERIFIED |
| MPMar-bal Pultrusion, INC. | Willoughby | OH | — | ◇ UNVERIFIED |
| MCMarble Connection/cabinet Connection | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| MPMarble Palace | Stockton | CA | — | ◇ UNVERIFIED |
| MNMarco Npk INC | Clinton | IL | — | ◇ UNVERIFIED |
| MEMarine Electrical Products | Lebanon | MO | — | ◇ UNVERIFIED |
| MIMark I Molded Plastics of Tennessee | Henry | TN | — | ◇ UNVERIFIED |
| MRMark Richey Woodworking & Design INC | Newburyport | MA | — | ◇ UNVERIFIED |
| MIMarlock INC | Maynardville | TN | — | ◇ UNVERIFIED |
| MFMars Fishcare INC | Chalfont | PA | — | ◇ UNVERIFIED |
| MLMartin Lumber 18 #1 & Swd | Union Hill | LA | — | ◇ UNVERIFIED |
| MMMartin Marietta Composites INC Sparta Facility | Sparta | NC | — | ◇ UNVERIFIED |
| MSMarubenl Specialty Chemicals | Vandalia | IL | — | ◇ UNVERIFIED |
| MPMaryland Plastics | Federalsburg | MD | — | ◇ UNVERIFIED |
| MRMasco Retail Cabinet Group | Waverly | OH | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions US at Palmer Logistics | Grand Prairie | TX | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions US LLC | Allentown | PA | — | ◇ UNVERIFIED |
| MPMastercraft Pattern and Model Works INC / Fiberglass Reinforced Plastic Mfg Faci | North Miami | OK | — | ◇ UNVERIFIED |
| MIMasterfab INC | Goshen | IN | — | ◇ UNVERIFIED |
| MMMaster Molded Products | Elgin | IL | — | ◇ UNVERIFIED |
| MWMaster Wall INC. | Lithonia | GA | — | ◇ UNVERIFIED |
| MWMaster Wash | Commerce City | CO | — | ◇ UNVERIFIED |
| MPMaterial Processing and Handling CO | Fostoria | OH | — | ◇ UNVERIFIED |
| MPMato Plastics INC. | Valencia | CA | — | ◇ UNVERIFIED |
| MPMauser Packaging Solutions | Charlotte | NC | — | ◇ UNVERIFIED |
| MIMaxxum INC | Rush | MN | — | ◇ UNVERIFIED |
| MMMayfair Molded Products CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| MBMccann Barrel | Milwaukee | WI | — | ◇ UNVERIFIED |
| MPMcclarin Plastics LLC | Hanover | PA | — | ◇ UNVERIFIED |
| MIMc Ionic Solutions Us, INC | Memphis | TN | — | ◇ UNVERIFIED |
| MRMckees Rocks Transfer Station | Mc Kees Rocks | PA | — | ◇ UNVERIFIED |
| MCMeadwestvaco Calmar INC. | Winfield | KS | — | ◇ UNVERIFIED |
 Medegen Medical Products, LLC | Northglenn | CO | — | ◇ UNVERIFIED |
| MIMedline INC. | Mundelein | IL | — | ◇ UNVERIFIED |
| MCMelsur CORP | Westminster | VT | — | ◇ UNVERIFIED |
| MCMerck & Co, LLC | Boulder | CO | — | ◇ UNVERIFIED |
| MPMercury Plastics, INC. | City of Industry | CA | — | ◇ UNVERIFIED |
| MAMeridian Automotive | Jackson | OH | — | ◇ UNVERIFIED |
| MAMeridian Automotive Systems | Shelbyville | IN | — | ◇ UNVERIFIED |
| MAMeridian Automotive Systems INC | Canandaigua | NY | — | ◇ UNVERIFIED |
| MHMeritor - Howell | Howell | MI | — | ◇ UNVERIFIED |
| MIMetaglo INC. | Mamaroneck | NY | — | ◇ UNVERIFIED |
| MFMetal Finishing Research CORP | Chicago | IL | — | ◇ UNVERIFIED |
| MCMetokote Corporation | Sanford | NC | — | ◇ UNVERIFIED |
| MGMfg Galileo Composites | Sparks | NV | — | ◇ UNVERIFIED |
