Machine Concepts INC | Minster | 100–499 | ● ACTIVE |
| MIMakino INC | Mason | 500+ | ● ACTIVE |
Manifold & Phalor INC | Canal Winchester | 20–99 | ● ACTIVE |
Martindale Electric Company, the | Lakewood | 20–99 | ● ACTIVE |
Meta Manufacturing CORP | Blue Ash | 20–99 | ● ACTIVE |
Midwest Specialties INC | Wapakoneta | 100–499 | ● ACTIVE |
Miller Weldmaster Corporation | Navarre | 20–99 | ● ACTIVE |
Minnich Manufacturing CO INC | Mansfield | 20–99 | ● ACTIVE |
Momentous Mold & Machine LLC | Cuyahoga Falls | 20–99 | ● ACTIVE |
Moore Industries, INC. | Montpelier | 20–99 | ● ACTIVE |
Morgan Engineering Systems INC | Alliance | 100–499 | ● ACTIVE |
National Machinery LLC | Tiffin | 100–499 | ● ACTIVE |
Nook Industries LLC | Cleveland | 100–499 | ● ACTIVE |
Numalliance-north America, INC. | Lebanon | 20–99 | ● ACTIVE |
Osi Environmental LLC | N Royalton | — | ● ACTIVE |
| PAPcc Airfoils Mentor | Mentor | 100–499 | ● ACTIVE |
Pmc Gage, INC | Willoughby | 20–99 | ● ACTIVE |
Polymet Corporation | Fairfield | 20–99 | ● ACTIVE |
Prospect Mold & Die Company | Cuyahoga Falls | 100–499 | ● ACTIVE |
Quintus Technologies, LLC | Lewis Center | 20–99 | ● ACTIVE |
Ready Technology, INC | Dayton | 20–99 | ● ACTIVE |
Remlinger Manufacturing CO INC | Kalida | 20–99 | ● ACTIVE |
Rennco Automation Systems, INC. | Holland | 1–19 | ● ACTIVE |
Riten Industries INC | Washington Court House | 20–99 | ● ACTIVE |
R & J Cylinder & Machine, INC | New Philadelphia | 20–99 | ● ACTIVE |
Robinson Fin Machines INC | Kenton | 20–99 | ● ACTIVE |
| RMRosewood Machine and Tool CO. | Rosewood | 20–99 | ● ACTIVE |
R.p. Gatta, INC. | Aurora | 20–99 | ● ACTIVE |
R. W. Martin and Sons INC | Kent | 20–99 | ● ACTIVE |
Select-arc INC | Fort Loramie | 100–499 | ● ACTIVE |
Singleton CORP | Cleveland | 1–19 | ● ACTIVE |
Skylift INC | Lorain | 20–99 | ● ACTIVE |
So-low Environmental Equipment, CO | Cincinnati | 20–99 | ● ACTIVE |
Sroka INC. | Strongsville | 20–99 | ● ACTIVE |
Stryver Manufacturing, INC. | Trotwood | 1–19 | ● ACTIVE |
Superalloy Manufacturing Solutions Corporation | Cincinnati | 20–99 | ● ACTIVE |
Surface Combustion INC | Maumee | 20–99 | ● ACTIVE |
| TETactical Environmental Systems INC | Milford | 1–19 | ● ACTIVE |
| TMTe-co Manufacturing LLC | Union | 20–99 | ● ACTIVE |
Tetra Mold & Tool, INC. | New Carlisle | 20–99 | ● ACTIVE |
The American Punch CO. | Euclid | 20–99 | ● ACTIVE |
The Estabrook Corporation | Berea | 20–99 | ● ACTIVE |
The French Oil Mill Machinery Company | Piqua | 20–99 | ● ACTIVE |
| TGThe Gorman-rupp Company | Mansfield | 100–499 | ● ACTIVE |
The Horsburgh & Scott CO | Cleveland | 100–499 | ● ACTIVE |
| TLThe Lincoln Electric Company | Mentor | 500+ | ● ACTIVE |
The Schaefer Group, INC | Beavercreek | — | ● ACTIVE |
The Ultra-met Company | Urbana | — | ● ACTIVE |
Trailex, INC. | Canfield | 1–19 | ● ACTIVE |
| TITrucut INC | Sebring | 20–99 | ● ACTIVE |