| MWMartinelli Winery, Inc. | Windsor | CA | Beverage and Tobacco Product Manufacturing312130 | 20-99 | ● ACTIVE |
Martinez and Turek, INC. | Rialto | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
| MRMartinez Refining | Martinez | CA | Petroleum and Coal Products Manufacturing324110 | 500+ | ● ACTIVE |
Marvin Engineering Co, INC | Inglewood | CA | Transportation Equipment Manufacturing336413 | 500+ | ● ACTIVE |
Marx Digital Mfg. INC. | Santa Clara | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Mason Electric CO. | Sylmar | CA | Transportation Equipment Manufacturing336413 | 100-499 | ● ACTIVE |
Master Metal Products Company | San Jose | CA | Fabricated Metal Product Manufacturing332114 | 1-19 | ● ACTIVE |
Mast Technologies, LLC | San Diego | CA | Chemical Manufacturing325211 | 1-19 | ● ACTIVE |
| MDMaterials Development Corporation | Chatsworth | CA | Computer and Electronic Product Manufacturing334515 | — | ● ACTIVE |
Materna Medical, INC | Mountain View | CA | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
Maury Microwave, INC. | Ontario | CA | Computer and Electronic Product Manufacturing334419 | 20-99 | ● ACTIVE |
Maverick Aerospace LLC | City of Industry | CA | Fabricated Metal Product Manufacturing332312 | — | ● ACTIVE |
Max Machinery, INC | Healdsburg | CA | Machinery Manufacturing333913 | 20-99 | ● ACTIVE |
M.c.i. Foods, INC. | Santa Fe Springs | CA | Food Manufacturing311412 | — | ● ACTIVE |
Mckenna Boiler Works, INC. | Oceanside | CA | Fabricated Metal Product Manufacturing332410 | 20-99 | ● ACTIVE |
Mclellan Industries, INC. | Hanford | CA | Machinery Manufacturing333131 | 20-99 | ● ACTIVE |
| MFMcmanis Family Vineyards | Ripon | CA | Beverage and Tobacco Product Manufacturing312130 | 20-99 | ● ACTIVE |
Mcm Engineering, INC | Burlingame | CA | Computer and Electronic Product Manufacturing334515 | 1-19 | ● ACTIVE |
| MPMdc Precision LLC | Hayward | CA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Means Engineering, INC. | Carlsbad | CA | Machinery Manufacturing333242 | 20-99 | ● ACTIVE |
Mechanical Metal Finishing CO | Gardena | CA | Fabricated Metal Product Manufacturing332813 | 1-19 | ● ACTIVE |
Medical Chemical Corporation | Torrance | CA | Chemical Manufacturing325413 | 20-99 | ● ACTIVE |
Medical Illumination International, INC. | Chatsworth | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | 20-99 | ● ACTIVE |
| MMMedtronic Minimed | Northridge | CA | Chemical Manufacturing325412 | 500+ | ● ACTIVE |
| MVMedtronic Vascular | Santa Rosa | CA | Fabricated Metal Product Manufacturing332994 | 100-499 | ● ACTIVE |
| MSMedwand Solutions, INC. | Rancho Santa Margarita | CA | Computer and Electronic Product Manufacturing334519 | 1-19 | ● ACTIVE |
Medwaves, INC | San Diego | CA | Miscellaneous Manufacturing339113 | 1-19 | ● ACTIVE |
Meggitt Defense Systems, INC. | Irvine | CA | Fabricated Metal Product Manufacturing332995 | 100-499 | ● ACTIVE |
| MCMeggitt (orange County), INC. | Irvine | CA | Computer and Electronic Product Manufacturing334516 | 20-99 | ● ACTIVE |
Melrose Metal Finishing, INC | Oakland | CA | Fabricated Metal Product Manufacturing332812 | 1-19 | ● ACTIVE |
Merit Cables Incorporated | Santa Ana | CA | Computer and Electronic Product Manufacturing334419 | 20-99 | ● ACTIVE |
Merrick Engineering, INC. | Corona | CA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ● ACTIVE |
| MEMetal Etch Services INC | San Marcos | CA | Fabricated Metal Product Manufacturing332999 | 20-99 | ● ACTIVE |
| MFMetal Finishing Group INC | Sacramento | CA | Fabricated Metal Product Manufacturing332813 | 20-99 | ● ACTIVE |
Metal Improvement Company, LLC | Livermore | CA | Fabricated Metal Product Manufacturing332811 | 20-99 | ● ACTIVE |
| MSMetlsaw Systems INC | Benicia | CA | Machinery Manufacturing333517 | 20-99 | ● ACTIVE |
Mettler-toledo Rainin, LLC | Oakland | CA | Plastics and Rubber Products Manufacturing326199 | 500+ | ● ACTIVE |
Meziere Enterprises, INC | Escondido | CA | Machinery Manufacturing333996 | 20-99 | ● ACTIVE |
Mgm Transformer LLC | Commerce | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | 100-499 | ● ACTIVE |
Microdental Laboratories, INC. | Livermore | CA | Miscellaneous Manufacturing339116 | — | ● ACTIVE |
Micro Medical Devices, INC. | Calabasas | CA | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
Micronix USA LLC | Fountain Valley | CA | Computer and Electronic Product Manufacturing334515 | 20-99 | ● ACTIVE |
| MQMicro Q, INC | San Diego | CA | Computer and Electronic Product Manufacturing334418 | 1-19 | ● ACTIVE |
| MSMicro Steel, INC | Canoga Park | CA | Fabricated Metal Product Manufacturing332710 | 1-19 | ● ACTIVE |
Microvention INC | Aliso Viejo | CA | Miscellaneous Manufacturing339112 | 500+ | ● ACTIVE |
Microwave Solutions, INC | National City | CA | Computer and Electronic Product Manufacturing334419 | 1-19 | ● ACTIVE |
Mike Kenney Tool, INC | Placentia | CA | Transportation Equipment Manufacturing336390 | 20-99 | ● ACTIVE |
Mil-bar Plastics, INC. | Corona | CA | Plastics and Rubber Products Manufacturing326199 | 1-19 | ● ACTIVE |
Millennium Metalcraft, INC. | Fremont | CA | Fabricated Metal Product Manufacturing332322 | — | ● ACTIVE |
Miller Castings INC | Whittier | CA | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |