| Marshall Brass Co (Marshall, MI)
|
| Marwin Valve (Cincinnati, OH)
|
| Massey Co (Savannah, GA)
|
| Mc Carty Equipment Co (Bryan, TX)
|
| Mc Coy Sales Corp (Littleton, CO)
|
| Mc Donald Valve Svc Corp (Mulberry, FL)
|
| Mc Junkin Corp (Farmington, NM)
|
| Mc Junkin Corp (Harvey, LA)
|
| Mc Junkin Corp (Decatur, AL)
|
| Mc Junkin Corp (Clinton, IA)
|
| Mc Junkin Corp (Kaukauna, WI)
|
| Mdc Vacuum Products Corp (Hayward, CA)
|
| Mead Westvaco Calmar (Buena Park, CA)
|
| Meador Supply Co (Twinsburg, OH)
|
| Mechanical Pipe & Supply Corp (Albany, NY)
|
| Mechanical Systems Support Co (Norfolk, VA)
|
| Metaris Hydraulics (Forest, MS)
|
| Metro Instruments (New Baltimore, MI)
|
| Metro Rubber & Supply (Smyrna, GA)
|
| Metso Automation (Lithia Springs, GA)
|
| Metso Automation (Charlotte, NC)
|
| Micromat Co (Mahwah, NJ)
|
| Miller Valve Co Inc (Pittsburgh, PA)
|
| Milliken Valve Co (Bethlehem, PA)
|
| Minnerallac (Hampshire, IL)
|
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