| ACAccord Carton | Alsip | IL | Paper Manufacturing322212 | — | ◇ UNVERIFIED |
| CPCardinal Plating Solutions INC | Aledo | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| EIElectro-max INC | Hampshire | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MMMaass Midwest Manufacturing INC | Huntley | IL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| PCProducers Chemical CO | Sugar Grove | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ALAbbott Laboratories - N. Chicago Fac. | North Chicago | IL | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| AAAccurate Anodizing CORP | Cicero | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ADAccurate Dispersions | South Holland | IL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| AAAce Anodizing & Impregnating INC | Hillside | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ACAdm CO | Decatur | IL | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| ARAdm Recycling INC | Peoria | IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| ALAdorn LLC | Bensenville | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AEAdvanced Electronics INC | West Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AFAdvanced Flexible Composites INC | Lake in the Hills | IL | Textile Mills313320 | — | ◇ UNVERIFIED |
| AKAgri King | Fulton | IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| AMAllied Metal CO | Chicago | IL | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| ACAlpha Circuit LLC | Schaumburg | IL | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| ACAluminum Coil Anodizing CORP | Streamwood | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIAmca International | Park Forest | IL | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| ABAmerican Buildings Company Near West Yard Improvements | El Paso | IL | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| ANAmerican Ntn Bearing Mfg CORP | Schiller Park | IL | Fabricated Metal Product Manufacturing332991 | — | ◇ UNVERIFIED |
| ACAmitron CORP | Elk Grove Village | IL | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| AIAmpel INC | Elk Grove Village | IL | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| ACAnderson Copper and Brass Fittings | Frankfort | IL | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| AFArmstrong Flooring INC | Kankakee | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| ACArntzen CORP | Woodstock | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ACArntzen CORP | Rockford | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical CO. -calumet City, Il | Calumet City | IL | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| AIAtf INC | Lincolnwood | IL | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ADAvery Dennison - Reflective Solutions | Niles | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| AGAzz Galvanizing Rockford LLC Dba Roger Bros Galvanizing LLC | Rockford | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BSBanner Service CORP | Carol Stream | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BPBeecher Protective Solutions Packaging Plant | Beecher | IL | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| BPBehr Process CORP | Chicago Heights | IL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BPBelmont Plating Works INC | Franklin Park | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BCBerner Cheese CORP | Dakota | IL | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| BMBimba Manufacturing CO | University Park | IL | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| BTBluewater Thermal Solutions-chicago 2 | Northlake | IL | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| BPBonar Plastics | West Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BIBuhrke Ind LLC | Arlington Heights | IL | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| BMBulk Molding Compounds INC | West Chicago | IL | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| BMBullen Midwest INC | Chicago | IL | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| BNBurgess Norton Mfg CO | Geneva | IL | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
| CICargill, Inc.industrial Oils & Lubricant | Chicago | IL | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| CBCarstin Brands INC | Arthur | IL | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| CCCarus CORP Lasalle Site | Lasalle | IL | Chemical Manufacturing325130 | — | ◇ UNVERIFIED |
| CFCerro Flow Products LLC | Sauget | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CMCharter Manufacturing CO INC | Woodstock | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| CIChem-plate Industries INC | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| CCChemstation Chicago | Elmhurst | IL | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
