| MDMechanical Designs of Virginia | Stuart | VA | — | ◇ UNVERIFIED |
| MFMechanical Finishers INC LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| MIMechanical Industries, INC. | Bakersfield | CA | — | ◇ UNVERIFIED |
| MRMechanical Repair & Engineering, L.p. | La Porte | TX | — | ◇ UNVERIFIED |
| MCMechanovent Corporation Dba the New York Blower Company | Effingham | IL | — | ◇ UNVERIFIED |
| MOMech One, INC. | San Diego | CA | — | ◇ UNVERIFIED |
| MMMechura Machine Works, LLC | Victoria | TX | — | ◇ UNVERIFIED |
| MIMec INC. | Atkins | VA | — | ◇ UNVERIFIED |
| MIMec INC. | Byron Center | MI | — | ◇ UNVERIFIED |
| MIMec INC. | Wayland | MI | — | ◇ UNVERIFIED |
| MMMeclec Metal Finishing INC | Fresno | CA | — | ◇ UNVERIFIED |
| MIMecpro INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| MMMedalist Mfg. INC. | Pella | IA | — | ◇ UNVERIFIED |
| MLMed-Co L.L.C. | Federal Way | WA | — | ◇ UNVERIFIED |
| MBMedia Blast & Abrasives INC | Brea | CA | — | ◇ UNVERIFIED |
| MMMedia Metals, LLC | Jackson | TN | — | ◇ UNVERIFIED |
| MMMedieval Metalwerx, LLC | Mayer | MN | — | ◇ UNVERIFIED |
| MMMedley Machine Shop INC. | Medley | FL | — | ◇ UNVERIFIED |
| MIMedplast INC. | West Berlin | NJ | — | ◇ UNVERIFIED |
| MIMed-tek INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| MMedtronic | Santa Rosa | CA | — | ◇ UNVERIFIED |
| MFMedway Flower LLC | Medway | MA | — | ◇ UNVERIFIED |
| MHMedway Hall Development Group, Inc. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MTMedway Tool Machining, LLC | Troy | OH | — | ◇ UNVERIFIED |
| MMMeeks Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| MMMega Mechanical Services, LLC | Glastonbury | CT | — | ◇ UNVERIFIED |
 Mega Precision INC | Weston | FL | — | ◇ UNVERIFIED |
| Mega Precision INC | Davie | FL | — | ◇ UNVERIFIED |
| MTMega Tool & Mfg CORP | Elmira | NY | — | ◇ UNVERIFIED |
| MPMehlberg Property, LLC | Wasco | CA | — | ◇ UNVERIFIED |
| MMMeiers Modern Metals, LLC | Portland | OR | — | ◇ UNVERIFIED |
| MTMekra Tool and Mold LLC | Ridgeway | SC | — | ◇ UNVERIFIED |
| MMMelampy Manufacturing CO. | Gibsonia | PA | — | ◇ UNVERIFIED |
| MLMelAnna LLC | Cambridge | MN | — | ◇ UNVERIFIED |
| MCMel Cor Sheet Metal, INC | Lyons | IL | — | ◇ UNVERIFIED |
| MMMeldrum Mechanical Services, INC. | Toledo | OH | — | ◇ UNVERIFIED |
| MMMelfred Manufacturing Company, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MCMelimar Custom Metal Finishing Services, INC | Davie | FL | — | ◇ UNVERIFIED |
| MMMelissa M Riley | Portland | OR | — | ◇ UNVERIFIED |
| MPMellies Products INC. | Morganville | KS | — | ◇ UNVERIFIED |
| MEMellinger Engineering Group, LLC | Sonoma | CA | — | ◇ UNVERIFIED |
| M2Mello 212 LLC | Northlake | TX | — | ◇ UNVERIFIED |
| MRMel Ric Plating INC | Pawtucket | RI | — | ◇ UNVERIFIED |
| MPMelting Point Welding & Fabrication, Inc. | Killingly | CT | — | ◇ UNVERIFIED |
| MBMelvin Baltodano | Ontario | CA | — | ◇ UNVERIFIED |
| MWMelvin Wrought Iron & Ornamental | Ontario | CA | — | ◇ UNVERIFIED |
| MMMe Machining INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| MSMembrane System Specialists, Inc. | Wisconsin Rapids | WI | — | ◇ UNVERIFIED |
| MSMemco Solutions LLC | Oxnard | CA | — | ◇ UNVERIFIED |
| MCMemphis Can Company* | Memphis | TN | — | ◇ UNVERIFIED |
| MSMemphis Sheet Metal Works INC | Memphis | TN | — | ◇ UNVERIFIED |
| MCMemry Corporation | Menlo Park | CA | — | ◇ UNVERIFIED |
| MMMenard Manufacturing INC. | Dewitt | AR | — | ◇ UNVERIFIED |
| MMMenator Metal Works LLC | Winneconne | WI | — | ◇ UNVERIFIED |
| MLMenco, LLC | Wausaukee | WI | — | ◇ UNVERIFIED |
| MSMendel Steel & Ornamental Iron Company | Bethel Park | PA | — | ◇ UNVERIFIED |
| MTMendeola Transaxles INC | San Diego | CA | — | ◇ UNVERIFIED |
| MOMendoza's Ornamental Iron | Fullerton | CA | — | ◇ UNVERIFIED |
| MOMen of Steel Enterprises, LLC | Bensalem | PA | — | ◇ UNVERIFIED |
| MPMenzia Properties, LLC | Cudahy | WI | — | ◇ UNVERIFIED |
| MFMercer Forge Corporation | Wheatland | PA | — | ◇ UNVERIFIED |
| MMMercer Machine and Tool LLC | Hamilton | NJ | — | ◇ UNVERIFIED |
| M1Merchant 1 Manufacturing LLC | Reidsville | NC | — | ◇ UNVERIFIED |
| MMMerchant Mfg INC | Maple Grove | MN | — | ◇ UNVERIFIED |
| MMMerchants Metals, LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| MMMerchant's Moving & Storage Corporation | Yoakum | TX | — | ◇ UNVERIFIED |
| MMMercury Metal | Eugene | OR | — | ◇ UNVERIFIED |
| MMMercury Metals | Watsonville | CA | — | ◇ UNVERIFIED |
| MMMercury Metalworks, LLC | Washington | PA | — | ◇ UNVERIFIED |
| MMMercury Minnesota INC | Faribault | MN | — | ◇ UNVERIFIED |
| MCMere Capital, LLC dba Czar Weld | House Springs | MO | — | ◇ UNVERIFIED |
| MPMerge Properties, LLC | Roca | NE | — | ◇ UNVERIFIED |
| MEMeribel Enterprises LLC Dba Atlas Manufacturing | Minneapolis | MN | — | ◇ UNVERIFIED |
| MMMeridian Manufacturing Group, INC. | Storm Lake | IA | — | ◇ UNVERIFIED |
| MSMeridian Specialty Vehicles | Las Vegas | NV | — | ◇ UNVERIFIED |
| MIMerit International Enterprises, INC | Miami | FL | — | ◇ UNVERIFIED |
| MTMeritt Tool & Die | Vermontville | MI | — | ◇ UNVERIFIED |
| MTMeriwether Tool | Fort Wayne | IN | — | ◇ UNVERIFIED |
| MWMerle W. Merchant, INC. | Palm Beach Gardens | FL | — | ◇ UNVERIFIED |
| MMMerrick Machine CO | Alda | NE | — | ◇ UNVERIFIED |
| MEMerrill Engineering & Integration | Saginaw | MI | — | ◇ UNVERIFIED |
| MFMerrill Fab | Merrill | WI | — | ◇ UNVERIFIED |
| MIMerrill Iron & Steel South | Springfield | MO | — | ◇ UNVERIFIED |
| MCMerrill's Custom Woodwork LLC | Hayden | ID | — | ◇ UNVERIFIED |
| MSMerrill Steel Camanche | Camanche | IA | — | ◇ UNVERIFIED |
| MCMerrimack County Customs, LLC. | Bradford | NH | — | ◇ UNVERIFIED |
| MTMerritt Tool & Manufacturing, INC. | Sussex | WI | — | ◇ UNVERIFIED |
| MGMesa General Engineering INC | Corona | CA | — | ◇ UNVERIFIED |
| MGMesa General Engineering INC | Castaic | CA | — | ◇ UNVERIFIED |
| MPMeschkat Precision Machining INC | Valencia | CA | — | ◇ UNVERIFIED |
| MVMesilla Valley Metals | Las Cruces | NM | — | ◇ UNVERIFIED |
| MPMesquite Plant | Mesquite | TX | — | ◇ UNVERIFIED |
| MMMesser Machine - Mfg INC | Windom | MN | — | ◇ UNVERIFIED |
| MIMestek INC | Florence | KY | — | ◇ UNVERIFIED |
| MIMestek, Incorporated | Wyalusing | PA | — | ◇ UNVERIFIED |
| MDMeta Designs, LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| MFMeta Fab | Hillsboro | OR | — | ◇ UNVERIFIED |
| MAMetal Air Ironworks, INC. | Chico | CA | — | ◇ UNVERIFIED |
| MAMetal Air Products, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| MAMetal Alliance Inc | Huntingdon Valley | PA | — | ◇ UNVERIFIED |
