| APAccurate Perforating Co., INC. | Chicago | 100–499 | ● ACTIVE |
Ace Metal Crafts CO | Bensenville | — | ● ACTIVE |
| AIA.j.r. Industries, INC. | Elk Grove Village | 20–99 | ● ACTIVE |
Aldrico, INC. | Wyoming | 20–99 | ● ACTIVE |
American Grinding & Machine CO | Chicago | 20–99 | ● ACTIVE |
Ark Technologies, INC. | Saint Charles | 20–99 | ● ACTIVE |
Astoria Wire Products INC | Bedford Park | 20–99 | ● ACTIVE |
| ATAtlas Tool & Die Works INC | Lyons | — | ● ACTIVE |
| AGAzz Galvanizing Dixon | Dixon | 20–99 | ● ACTIVE |
Bbc Fasteners, INC. | Alsip | 20–99 | ● ACTIVE |
Betts Precision, INC | Alsip | 20–99 | ● ACTIVE |
Camcraft INC | Hanover Park | 100–499 | ● ACTIVE |
Cast Aluminum Solutions, LLC | Batavia | 100–499 | ● ACTIVE |
| CPCentury Plating CO INC | Chicago | 20–99 | ● ACTIVE |
Chem Processing INC | Rockford | 20–99 | ● ACTIVE |
| CSCleveland Steel Container CORP | Peotone | 20–99 | ● ACTIVE |
Clifford-jacobs Forging Company | Champaign | 100–499 | ● ACTIVE |
Cornell Forge Company | Chicago | 100–499 | ● ACTIVE |
Craig Industries, INC. | Quincy | 20–99 | ● ACTIVE |
Designcraft, INC | Lake Zurich | 20–99 | ● ACTIVE |
Deublin Company, LLC | Waukegan | 100–499 | ● ACTIVE |
Dupage Machine Products, INC | Bloomingdale | 100–499 | ● ACTIVE |
Ella Engineering Incorporated | Elk Grove Village | 20–99 | ● ACTIVE |
Fotofab, LLC | Chicago | 20–99 | ● ACTIVE |
| HSHeidtman Steel Products INC | Granite City | 20–99 | ● ACTIVE |
Induction Heat Treating CORP. | Crystal Lake | 20–99 | ● ACTIVE |
J. H. Botts, LLC | Joliet | 20–99 | ● ACTIVE |
J. T. Cullen CO INC | Fulton | 20–99 | ● ACTIVE |
Kepner Products CO | Villa Park | 20–99 | ● ACTIVE |
Kvf-quad, Corporation | East Moline | 20–99 | ● ACTIVE |
| LWL. W. Schneider, INC | Princeton | 100–499 | ● ACTIVE |
Magnetic Inspection Laboratory, INC | Elk Grove Village | 100–499 | ● ACTIVE |
Mah Machine Company | Cicero | 20–99 | ● ACTIVE |
Marathon Cutting Die INC | Wheeling | 20–99 | ● ACTIVE |
| MSMaterial Sciences CORP | Elk Grove Village | 20–99 | ● ACTIVE |
Mech Tronics CORP | Melrose Park | 20–99 | ● ACTIVE |
| MPModern Plating CORP | Freeport | 20–99 | ● ACTIVE |
Murphy Machine Products, INC. | Wood Dale | 20–99 | ● ACTIVE |
Panek Precision Products LLC | Northbrook | 100–499 | ● ACTIVE |
Rockford Ball Screw Company | Rockford | 20–99 | ● ACTIVE |
Safety Storage, INC | Charleston | 20–99 | ● ACTIVE |
Saporito Finishing CO | Cicero | 100–499 | ● ACTIVE |
Scot Forge Company | Spring Grove | — | ● ACTIVE |
| SFSenior Flexonics | Bartlett | 100–499 | ● ACTIVE |
Servi-sure, LLC | Chicago | — | ● ACTIVE |
| SISkolnik Industries LLC | Chicago | 100–499 | ● ACTIVE |
Smalley Steel Ring CO. | Lake Zurich | 500+ | ● ACTIVE |
Smith & Richardson Manufacturing CO | Geneva | 20–99 | ● ACTIVE |
| SHSouth Holland Metal Finishing | Monee | 20–99 | ● ACTIVE |
| SSSpraying Systems CO | Glendale Heights | — | ● ACTIVE |