Quintel INC | Schererville, IN | Fabricated Metal Product Manufacturing332410 | — | ● ACTIVE |
Radco Industries INC | Batavia, IL | Petroleum and Coal Products Manufacturing324191 | — | ● ACTIVE |
Ramcel Precision Stamping & Manufacturing LLC | Northbrook, IL | Fabricated Metal Product Manufacturing332119 | 20–99 | ● ACTIVE |
| RCRauland-borg CORP | Mount Prospect, IL | Computer and Electronic Product Manufacturing334290 | — | ● ACTIVE |
Recycled Rubber Products Distributors, LLC | Joliet, IL | Miscellaneous Manufacturing339999 | — | ● ACTIVE |
| RMReed Minerals, LLC | Gary, IN | Nonmetallic Mineral Product Manufacturing327910 | 1–19 | ● ACTIVE |
| ROReliance Orthodontic Products, INC. | Itasca, IL | Miscellaneous Manufacturing339114 | — | ● ACTIVE |
Remco Technology, INC | Skokie, IL | Plastics and Rubber Products Manufacturing326140 | — | ● ACTIVE |
| RIRenishaw, INC. | West Dundee, IL | Computer and Electronic Product Manufacturing334513 | — | ● ACTIVE |
Richards-wilcox INC | Aurora, IL | Machinery Manufacturing333922 | — | ● ACTIVE |
| RWRichard Wolf Medical Instruments CORP | Vernon Hills, IL | Miscellaneous Manufacturing339112 | 100–499 | ● ACTIVE |
| RFRichelieu Foods | Wheeling, IL | Food Manufacturing311412 | 100–499 | ● ACTIVE |
| RIRoncadin INC | Vernon Hills, IL | Food Manufacturing311412 | 20–99 | ● ACTIVE |
R & R Holdings INC | Des Plaines, IL | Leather and Allied Product Manufacturing316998 | 20–99 | ● ACTIVE |
Sage Products, LLC | Cary, IL | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
Salamander Studios Chicago INC | Chicago, IL | Paper Manufacturing322230 | — | ● ACTIVE |
Saliba Industries Holdings, LLC | Waukegan, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Sandman.com, INC | La Grange, IL | Computer and Electronic Product Manufacturing334210 | — | ● ACTIVE |
Sauber Manufacturing CO | Virgil, IL | Transportation Equipment Manufacturing336212 | — | ● ACTIVE |
| SBSb Boron Corporation | Bellwood, IL | Chemical Manufacturing325180 | — | ● ACTIVE |
Schmid Tool & Engineering CORP | Villa Park, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| SPSchultes Precision Manufacturing INC | Buffalo Grove, IL | Fabricated Metal Product Manufacturing332710 | 100–499 | ● ACTIVE |
Sciaky INC | Chicago, IL | Machinery Manufacturing333992 | — | ● ACTIVE |
Sievert Electric Service and Sales Company | Forest Park, IL | Machinery Manufacturing333923 | 20–99 | ● ACTIVE |
Sko-die, LLC | Morton Grove, IL | Fabricated Metal Product Manufacturing332999 | 20–99 | ● ACTIVE |
| SMS & M Group INC | Wood Dale, IL | Computer and Electronic Product Manufacturing334418 | — | ● ACTIVE |
Sonic Manufacturing Corporation | Elk Grove Village, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Spherotech INC | Lake Forest, IL | Chemical Manufacturing325211 | 20–99 | ● ACTIVE |
Stanley Machining & Tool CORP | Carpentersville, IL | Fabricated Metal Product Manufacturing332710 | 100–499 | ● ACTIVE |
Stanley Spring and Stamping CORP | Chicago, IL | Fabricated Metal Product Manufacturing332111 | 20–99 | ● ACTIVE |
Star Engineering LLC | Addison, IL | Machinery Manufacturing333517 | — | ● ACTIVE |
Stereo Optical Company, INC | Chicago, IL | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
Sterling Spring LLC | Chicago, IL | Fabricated Metal Product Manufacturing332613 | 20–99 | ● ACTIVE |
Stratton Hats, INC | Bellwood, IL | Apparel Manufacturing315990 | 20–99 | ● ACTIVE |
| SSSuburban Surgical CO. | Wheeling, IL | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
| SCSuter CO Inc, the | Sycamore, IL | Food Manufacturing311612 | 100–499 | ● ACTIVE |
| TETaylor Edm Specialties LLC | Wauconda, IL | Machinery Manufacturing333514 | — | ● ACTIVE |
| TFTaylor Farms Illinois, INC. | Chicago, IL | Food Manufacturing311612 | 100–499 | ● ACTIVE |
Tech-weld INC | Sycamore, IL | Fabricated Metal Product Manufacturing332322 | — | ● ACTIVE |
Teledyne Defense Electronics, LLC | Woodridge, IL | Primary Metal Manufacturing331420 | — | ● ACTIVE |
Tempco Electric Heater Corporation | Wood Dale, IL | Machinery Manufacturing333414 | — | ● ACTIVE |
The Bennu Group INC | South Holland, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
The Edlong Corporation | Elk Grove Village, IL | Food Manufacturing311920 | — | ● ACTIVE |
The New York Blower Company | Willowbrook, IL | Machinery Manufacturing333413 | 20–99 | ● ACTIVE |
The Progress Group, INC. | Schererville, IN | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| TPThe Protectoseal Company | Bensenville, IL | Fabricated Metal Product Manufacturing332999 | 20–99 | ● ACTIVE |
Thermal Care INC | Niles, IL | Machinery Manufacturing333415 | — | ● ACTIVE |
Tian Medical LLC | Libertyville, IL | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
| TPTone Products, INC. | Melrose Park, IL | Food Manufacturing311941 | 100–499 | ● ACTIVE |
Toolex CORP | Addison, IL | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |