Abbott Molecular INC. | Des Plaines, IL | Chemical Manufacturing325413 | — | ● ACTIVE |
Ab Specialty Silicones, LLC | Waukegan, IL | Chemical Manufacturing325199 | 20–99 | ● ACTIVE |
Accelerated Assemblies, INC | Elk Grove Vlg, IL | Computer and Electronic Product Manufacturing334418 | — | ● ACTIVE |
Accurate Felt & Gasket Manufacturing CO | Cicero, IL | Miscellaneous Manufacturing339991 | 20–99 | ● ACTIVE |
| APAccurate Perforating Co., INC. | Chicago, IL | Fabricated Metal Product Manufacturing332116 | 100–499 | ● ACTIVE |
Ace Metal Crafts CO | Bensenville, IL | Fabricated Metal Product Manufacturing332999 | — | ● ACTIVE |
Acme Alliance LLC | Northbrook, IL | Primary Metal Manufacturing331523 | 100–499 | ● ACTIVE |
| ATAcs Technical Products, INC. | Griffith, IN | Chemical Manufacturing325191 | 20–99 | ● ACTIVE |
Advanced Mobility & Shelter Technologies, LLC | University Park, IL | Transportation Equipment Manufacturing336212 | — | ● ACTIVE |
| APAdvanced Plastic CORP | Lincolnwood, IL | Plastics and Rubber Products Manufacturing326121 | 100–499 | ● ACTIVE |
| AIA.j.r. Industries, INC. | Elk Grove Village, IL | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
| ATAllied Tube & Conduit Corporation | Harvey, IL | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Alu-bra Foundry, INC. | Bensenville, IL | Primary Metal Manufacturing331524 | 20–99 | ● ACTIVE |
American Grinding & Machine CO | Chicago, IL | Fabricated Metal Product Manufacturing332313 | 20–99 | ● ACTIVE |
Amity Packing Company, INC. | Chicago, IL | Food Manufacturing311612 | — | ● ACTIVE |
Arc-tronics INC | Elk Grove Village, IL | Computer and Electronic Product Manufacturing334418 | 100–499 | ● ACTIVE |
Argentum Medical, LLC | Geneva, IL | Miscellaneous Manufacturing339113 | 20–99 | ● ACTIVE |
Ark Technologies, INC. | Saint Charles, IL | Primary Metal Manufacturing331318 | 20–99 | ● ACTIVE |
Astoria Wire Products INC | Bedford Park, IL | Fabricated Metal Product Manufacturing332322 | 20–99 | ● ACTIVE |
| ATAtlas Tool & Die Works INC | Lyons, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| AMAurora Metals Division LLC | Montgomery, IL | Primary Metal Manufacturing331523 | 20–99 | ● ACTIVE |
| BBBattery Builders Incorporated | Naperville, IL | Electrical Equipment, Appliance & Component Manufacturing335910 | 100–499 | ● ACTIVE |
Bbc Fasteners, INC. | Alsip, IL | Fabricated Metal Product Manufacturing332722 | 20–99 | ● ACTIVE |
Bearse Manufacturing CO | Chicago, IL | Textile Product Mills314910 | 20–99 | ● ACTIVE |
Betts Precision, INC | Alsip, IL | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
Bisco INC | Schaumburg, IL | Miscellaneous Manufacturing339114 | 100–499 | ● ACTIVE |
Bronson & Bratton INC | Burr Ridge, IL | Machinery Manufacturing333514 | 20–99 | ● ACTIVE |
Calumet Brass Foundry, INC | Dolton, IL | Primary Metal Manufacturing331524 | 1–19 | ● ACTIVE |
Camcraft INC | Hanover Park, IL | Fabricated Metal Product Manufacturing332710 | 100–499 | ● ACTIVE |
Cast Aluminum Solutions, LLC | Batavia, IL | Primary Metal Manufacturing331312 | 100–499 | ● ACTIVE |
Cef Industries, LLC | Addison, IL | Transportation Equipment Manufacturing336413 | 20–99 | ● ACTIVE |
| CPCentury Plating CO INC | Chicago, IL | Fabricated Metal Product Manufacturing332813 | 20–99 | ● ACTIVE |
Chicago Dryer CO | Chicago, IL | Machinery Manufacturing333248 | 100–499 | ● ACTIVE |
| CHChicago Heights Steel | Chicago Heights, IL | Primary Metal Manufacturing331110 | 100–499 | ● ACTIVE |
Chicago Magnesium Casting CO | Blue Island, IL | Primary Metal Manufacturing331524 | — | ● ACTIVE |
Chicago Meat Authority INC | Chicago, IL | Food Manufacturing311611 | — | ● ACTIVE |
| CSCleveland Steel Container CORP | Peotone, IL | Fabricated Metal Product Manufacturing332439 | 20–99 | ● ACTIVE |
Control Solutions LLC | Aurora, IL | Computer and Electronic Product Manufacturing334419 | 20–99 | ● ACTIVE |
Cornell Forge Company | Chicago, IL | Fabricated Metal Product Manufacturing332111 | 100–499 | ● ACTIVE |
| CMCostco Morris Meat Plant #1239 | Morris, IL | Food Manufacturing311612 | 500+ | ● ACTIVE |
Davies Molding LLC | Carol Stream, IL | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |
| DTDental Technologies INC | Lincolnwood, IL | Chemical Manufacturing325611 | 20–99 | ● ACTIVE |
Designcraft, INC | Lake Zurich, IL | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
Deublin Company, LLC | Waukegan, IL | Fabricated Metal Product Manufacturing332919 | 100–499 | ● ACTIVE |
Dupage Machine Products, INC | Bloomingdale, IL | Fabricated Metal Product Manufacturing332721 | 100–499 | ● ACTIVE |
| DIDurex International CORP. | Cary, IL | Machinery Manufacturing333414 | 100–499 | ● ACTIVE |
Dynacast, LLC | Elgin, IL | Primary Metal Manufacturing331523 | 100–499 | ● ACTIVE |
Echo, Incorporated | Lake Zurich, IL | Machinery Manufacturing333112 | 500+ | ● ACTIVE |
Eichrom Technologies LLC | Lisle, IL | Chemical Manufacturing325211 | 20–99 | ● ACTIVE |
Eirich Machines, INC. | Gurnee, IL | Machinery Manufacturing333241 | 20–99 | ● ACTIVE |