- M&M Specialty Services Lansing, KS
- Magik Kleeners Sales Inc. Harlan, IA
- Maljohn Company Binbrook, ON
- Marcus Construction Willmar, MN
- Mathews Company Crystal Lake, IL
- Maxi-Lift Inc. Dallas, TX
- Maxi-Tronic, Inc. Loveland, OH
- McCormick Construction Company Greenfield, MN
- McPherson Concrete Storage Systems McPherson, KS
- Mega Dryers Wichita, KS
- Metso York, PA
- MFS/York/Stormor Grand Island, NE
- Mid-Continent Industries, Inc. Newton, KS
- Midwest Mill Modernization Inc. Eureka, KS
- Mole-Master Services Corp. Marietta, OH
- Mollers North America, Inc. Grand Rapids, MI
- Monitor Technologies LLC Elburn, IL
- Morgan Plastic Fabrication Lexington, NE