| MSMetro Steel & Pipe Supply, INC. | Tavares | FL | 20–99 | ● ACTIVE |
| MAMettler-toledo Autochem, INC. | Columbia | MD | 100–499 | ● ACTIVE |
Meva Formwork Systems INC | Springfield | OH | — | ● ACTIVE |
| MRMeyercord Revenue INC | Carol Stream | IL | 20–99 | ● ACTIVE |
| MTMeyer Tool, INC. | Cincinnati | OH | 500+ | ● ACTIVE |
Mfc Netform LLC | Shelby Township | MI | — | ● ACTIVE |
Mhc Medical Products, LLC | Fairfield | OH | — | ● ACTIVE |
M & H Machining, INC | Georgetown | TX | — | ● ACTIVE |
Mica-tron Products CORP | Holbrook | MA | — | ● ACTIVE |
Microaire Surgical Instruments LLC | Charlottesville | VA | — | ● ACTIVE |
Micro Audiometrics Corporation | Daytona Beach | FL | — | ● ACTIVE |
Microcare, LLC | New Britain | CT | — | ● ACTIVE |
| MPMicro-dimensional Products INC | Norristown | PA | — | ● ACTIVE |
Micro Medical Devices, INC. | Calabasas | CA | — | ● ACTIVE |
| MPMicron Precision Machining INC | Saginaw | MI | — | ● ACTIVE |
| MPMicron Products INC | Fitchburg | MA | 20–99 | ● ACTIVE |
| MFMicroprobes for Life Science INC | Gaithersburg | MD | — | ● ACTIVE |
| MQMicro Q, INC | San Diego | CA | — | ● ACTIVE |
Microtech Machine CO INC | Wheeling | IL | — | ● ACTIVE |
| MIMicrotrac, INC. | York | PA | 20–99 | ● ACTIVE |
Mid-america Taping & Reeling INC | Glendale Heights | IL | — | ● ACTIVE |
Mid-continent Engineering, LLC | Minneapolis | MN | — | ● ACTIVE |
Mid-continent Machining INC | Kansas City | KS | — | ● ACTIVE |
Midgard INC | Green Lane | PA | — | ● ACTIVE |
| MTMid-state Tank CO INC | Sullivan | IL | — | ● ACTIVE |
Mid Valley Industries, LLC | Kaukauna | WI | — | ● ACTIVE |
Midway Machine & Instrument Company INC | South Houston | TX | — | ● ACTIVE |
Midwest Bale Ties INC | Crawfordsville | IN | — | ● ACTIVE |
Midwest Cooling Towers INC | Chickasha | OK | — | ● ACTIVE |
Midwest Engineered Systems, INC. | Waukesha | WI | 100–499 | ● ACTIVE |
Midwest Industrial Metal Fabrication, INC. | Huntington | IN | — | ● ACTIVE |
Midwest Industrial Supply INC | Canton | OH | — | ● ACTIVE |
Midwest Metal Fabrication LLC | Manitowoc | WI | — | ● ACTIVE |
| MPMidwest Precision Molding, INC | Lake Geneva | WI | 20–99 | ● ACTIVE |
Midwest Tool, INC. | Joplin | MO | — | ● ACTIVE |
Mike Gibson Manufacturing INC | Caldwell | ID | — | ● ACTIVE |
Mikron Manufacturing, INC. | Colorado Springs | CO | — | ● ACTIVE |
Mil-bar Plastics, INC. | Corona | CA | — | ● ACTIVE |
Milestone Scientific INC. | Roseland | NJ | — | ● ACTIVE |
Milhous Control Company | Amherst | VA | — | ● ACTIVE |
Millennium Dental Technologies, INC. | Cerritos | CA | — | ● ACTIVE |
Millennium Precision LLC | Manchester | NH | — | ● ACTIVE |
Miller-leaman, INC. | Daytona Beach | FL | — | ● ACTIVE |
Milliflect Company LLC | Newark | CA | — | ● ACTIVE |
Millrite Machine INC. | Westfield | MA | — | ● ACTIVE |
Millrock Technology INC | Kingston | NY | 20–99 | ● ACTIVE |
Mill Rose CO | Mentor | OH | — | ● ACTIVE |
Mills Manufacturing Corporation | Asheville | NC | 100–499 | ● ACTIVE |
Mil-mar Century Corporation | Miamisburg | OH | — | ● ACTIVE |
| MMMilo Machining INC. | Torrance | CA | — | ● ACTIVE |
Miltenyi Biotec, INC. | Auburn | CA | — | ● ACTIVE |
Milton Manufacturing, INC. | Detroit | MI | — | ● ACTIVE |
Milton, Vermont Sheet Metal, INC | Milton | VT | — | ● ACTIVE |
| MMMinden Machine Shop INC | Minden | NE | 20–99 | ● ACTIVE |
Mindray Ds USA INC | Mahwah | NJ | — | ● ACTIVE |
Minearc Systems America LLC | Lancaster | TX | 20–99 | ● ACTIVE |
| MSMinerva Surgical, INC. | Santa Clara | CA | — | ● ACTIVE |
Minerva Welding and Fabricating, INC. | Minerva | OH | — | ● ACTIVE |
Mini-flex Corporation | Ventura | CA | — | ● ACTIVE |
| MFMinitec Framing Systems, LLC | Farmington | NY | 20–99 | ● ACTIVE |
Minnesota Waterjet, INC. | Anoka | MN | — | ● ACTIVE |
Minnysonoda CORP | Monroe | WA | 20–99 | ● ACTIVE |
Minter Industries, LLC | Lakewood | WA | — | ● ACTIVE |
| MTMirion Technologies (canberra), INC. | Meriden | CT | 100–499 | ● ACTIVE |
Mission Critical Solutions, LLC | Alum Bank | PA | 20–99 | ● ACTIVE |
| MSMission Systems Davenport INC. | Davenport | IA | — | ● ACTIVE |
Mississippi Valley Metals LLC | Maquoketa | IA | — | ● ACTIVE |
Mjm Manufacturing INC | Miami Lakes | FL | — | ● ACTIVE |
M-l Utilities LLC | Spring Hill | TN | — | ● ACTIVE |
M & M Industries, INC. | Chattanooga | TN | — | ● ACTIVE |
Mmlj INC | Houston | TX | — | ● ACTIVE |
Mobile Component, INC | Boise | ID | — | ● ACTIVE |
Mobilion Systems INC | Chadds Ford | PA | 20–99 | ● ACTIVE |
Mocap LLC | Park Hills | MO | — | ● ACTIVE |
Modelcraft Company, Incorporated | Plymouth | CT | — | ● ACTIVE |
Modern Advanced Manufacturing LLC | Rockford | IL | 20–99 | ● ACTIVE |
Modern Engineering Solutions LLC | Rockford | MI | 20–99 | ● ACTIVE |
| MFModern Forge Texas, LLC | Hurst | TX | 20–99 | ● ACTIVE |
| MIModern Industries, INC. | Phoenix | AZ | — | ● ACTIVE |
Modern Metal Finishing, LLC | Oxford | CT | — | ● ACTIVE |
Modern Mold and Tool, INC. | Pittsfield | MA | — | ● ACTIVE |
| MPModern Plating Coatings & Finishes LLC | Elizabethtown | KY | 20–99 | ● ACTIVE |
| MWModern Welding Company of Kentucky INC - Elizabethtown | Elizabethtown | KY | 20–99 | ● ACTIVE |
| MModineer-pulverman | Dallas | PA | 100–499 | ● ACTIVE |
Modine Manufacturing CO | Racine | WI | 100–499 | ● ACTIVE |
Modula INC | Franklin | OH | 100–499 | ● ACTIVE |
Modular Bionics INC. | Berkeley | CA | — | ● ACTIVE |
Modular Container Systems, INC. | Lavonia | GA | 20–99 | ● ACTIVE |
Modulated Imaging INC | Costa Mesa | CA | — | ● ACTIVE |
Mofab INC | Anderson | IN | — | ● ACTIVE |
Mojave Energy Systems, INC. | Sunnyvale | CA | — | ● ACTIVE |
Mold-a-matic CORP | Oneonta | NY | — | ● ACTIVE |
Molding Concepts INC | Sterling Heights | MI | — | ● ACTIVE |
Mold Precision Engineering INC | Simi Valley | CA | — | ● ACTIVE |
Moldtronics INC | Downers Grove | IL | — | ● ACTIVE |
Molecular Devices LLC | San Jose | CA | — | ● ACTIVE |
Molecular Rebar Design LLC | Austin | TX | — | ● ACTIVE |
| MMMoly Manufacturing LLC | Lorraine | KS | 1–19 | ● ACTIVE |
Monitored Therapeutics INC | Dublin | OH | — | ● ACTIVE |
Monroe Tool and Manufacturing Company | Cleveland | OH | — | ● ACTIVE |