| MNMarble - N - More | Saticoy | CA | — | ◇ UNVERIFIED |
| MPMastercraft Pattern C/o Jonah Bishop | Pittsburg | KS | — | ◇ UNVERIFIED |
| MPMaster Plastics of California INC | Vacaville | CA | — | ◇ UNVERIFIED |
| MPMatagorda Plant | Bay City | TX | — | ◇ UNVERIFIED |
| MCMaverick Corporation | Cincinnati | OH | — | ◇ UNVERIFIED |
| MCMaverick Corporation | Miamisburg | OH | — | ◇ UNVERIFIED |
| MIMayco International | Clinton Township | MI | — | ◇ UNVERIFIED |
| MEMayflower Enterprise | Whitman | MA | — | ◇ UNVERIFIED |
| MPMCM Plastics Inc | Holden | LA | — | ◇ UNVERIFIED |
| MCMcns-us Covington | Covington | GA | — | ◇ UNVERIFIED |
| MPMechanical Plastics INC | Agawam | MA | — | ◇ UNVERIFIED |
| MEMedtronic Energy & Component Center | Minneapolis | MN | — | ◇ UNVERIFIED |
| MTMeltblown Technologies, LLC | Sandersville | GA | — | ◇ UNVERIFIED |
| MUMenges Urethane INC. | Goddard | KS | — | ◇ UNVERIFIED |
| MPMercury Plastics INC Dba Poly Pak Packaging | Vernon | CA | — | ◇ UNVERIFIED |
| MOMetal Oak Casting Studios LLC | Saint Charles | MO | — | ◇ UNVERIFIED |
 Metal Products | Suwanee | GA | — | ◇ UNVERIFIED |
| MMMetamorphic Materials INC | Winsted | CT | — | ◇ UNVERIFIED |
| MHMetronom Health INC | Laguna Beach | CA | — | ◇ UNVERIFIED |
| MRM&g Resins USA | Corpus Christi | TX | — | ◇ UNVERIFIED |
| MFMicronized Fluoropolymer Products INC. | Delray Beach | FL | — | ◇ UNVERIFIED |
| MMMicron Medical Products | Fitchburg, City of | MA | — | ◇ UNVERIFIED |
| MBMicrovi Biotech INC. | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| MSMicrowave Specialty Company | San Marcos | CA | — | ◇ UNVERIFIED |
| MAMid Atlantic Vinyl Products INC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| MMMilacron Marketing Company, LLC | Tecumseh | MI | — | ◇ UNVERIFIED |
| MPMilacron Plastics Technologies Group LLC (1413020004) | Batavia | OH | — | ◇ UNVERIFIED |
| MPMilitary Packaging INC | Florence | KY | — | ◇ UNVERIFIED |
| MPMillennium Plastics, Inc | Groveland | MA | — | ◇ UNVERIFIED |
| MWMiller Waste Mills INC Dba Rtp Company | Henderson | KY | — | ◇ UNVERIFIED |
| MPMina Products Development INC | Costa Mesa | CA | — | ◇ UNVERIFIED |
| MRMinton Road Plant | Saginaw | TX | — | ◇ UNVERIFIED |
| MCMirwec Coating | Bloomington | IN | — | ◇ UNVERIFIED |
| MMiteject,inc | National City | CA | — | ◇ UNVERIFIED |
| MCMitsubishi Chem Advanced Material Laurel Line Mfg/scranton | Scranton | PA | — | ◇ UNVERIFIED |
| MCMitsubishi Chem Advanced Materials Inc/delmont 4 | Delmont | PA | — | ◇ UNVERIFIED |
| MCMitsubishi Chemical Advanced Materials | Stockton | CA | — | ◇ UNVERIFIED |
| MDMixed Dimensions | San Mateo | CA | — | ◇ UNVERIFIED |
| MCMobil Chemical Company | Santa Ana | CA | — | ◇ UNVERIFIED |
| MCMocom Compounds Corporation | Duncan | SC | — | ◇ UNVERIFIED |
| MPModern Plastics CORP. | Wilkes Barre | PA | — | ◇ UNVERIFIED |
| MPModern Plastics Recovery, INC. | Haviland | OH | — | ◇ UNVERIFIED |
| MSModular Solid Surfaces, LLC | Lakeland | FL | — | ◇ UNVERIFIED |
| MAMolten (north America) CORP (0332010080) | Findlay | OH | — | ◇ UNVERIFIED |
| MPMomentive Performance Materials | Waterford | NY | — | ◇ UNVERIFIED |
| MPMomentive Performance Materials | Madera | CA | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC. | High Point | NC | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC Mt Jewett Facility | Mount Jewett | PA | — | ◇ UNVERIFIED |
| MPMondo Polymer Technologies, INC. | Marietta | OH | — | ◇ UNVERIFIED |
| MLMonosol LLC | Portage | IN | — | ◇ UNVERIFIED |
