| BABall Aerosol & Specialty Container INC | Elgin | — | ◇ UNVERIFIED |
| BPBarnes Plating CORP | Chicago | — | ◇ UNVERIFIED |
| BIBellwood Industrial Plating INC | Chicago | — | ◇ UNVERIFIED |
| BUBerger US INC | Chicago | — | ◇ UNVERIFIED |
| BPBerteau-lowell Plating Plating INC | Chicago | — | ◇ UNVERIFIED |
| BDBl Downey CO LLC | Broadview | — | ◇ UNVERIFIED |
| BTBluewater Thermal Solutions Chicago 1 | Northlake | — | ◇ UNVERIFIED |
| BTBodycote Thermal Processing | Melrose Park | — | ◇ UNVERIFIED |
| BFBrad Foote Gear Works INC | Cicero | — | ◇ UNVERIFIED |
| BGBrightly Galvanized Products | Cicero | — | ◇ UNVERIFIED |
| BTB & T Polishing INC | Chicago | — | ◇ UNVERIFIED |
| BCBway Corporation | Chicago | — | ◇ UNVERIFIED |
| BPBway Packaging | Franklin Park | — | ◇ UNVERIFIED |
| CPCalco Plating CO | Chicago | — | ◇ UNVERIFIED |
| CACalumet Armature & Electric LLC | Riverdale | — | ◇ UNVERIFIED |
| CFCam Fran Tool CO INC | Elk Grove Village | — | ◇ UNVERIFIED |
| CICasting Impregnators INC | Franklin Park | — | ◇ UNVERIFIED |
| CTCertified Tool & Mfg | Elk Grove Village | — | ◇ UNVERIFIED |
| CHCfm Harris Systems INC | Skokie | — | ◇ UNVERIFIED |
| CIChem-plate Industries INC | Maywood | — | ◇ UNVERIFIED |
| CFChicago Faucet CO | Des Plaines | — | ◇ UNVERIFIED |
| CPChicago Plating INC | Chicago | — | ◇ UNVERIFIED |
| CPChicago Powdered Metal Products CO | Schiller Park | — | ◇ UNVERIFIED |
| CSChicago Steel Rule Die & Fabricators CO | Chicago | — | ◇ UNVERIFIED |
| CTChicago Title Land Trust | Chicago | — | ◇ UNVERIFIED |
| CMCircle Metal Specialties INC | Alsip | — | ◇ UNVERIFIED |
| CMClybourn Metal Finishing CO | Chicago | — | ◇ UNVERIFIED |
| CFCommercial Fabricators | Bridgeview | — | ◇ UNVERIFIED |
| CFCommercial Finishes CO LTD | Elk Grove Village | — | ◇ UNVERIFIED |
| CFCommercial Forged Products | Chicago | — | ◇ UNVERIFIED |
| CSCompx Securityproducts | River Grove | — | ◇ UNVERIFIED |
| CIConnelly-gpm INC | Chicago | — | ◇ UNVERIFIED |
| CSContour Saws INC | Des Plaines | — | ◇ UNVERIFIED |
| CPCraftsman Plating & Tinning | Chicago | — | ◇ UNVERIFIED |
| CPCraftsman Plating & Tinning CORP | Chicago | — | ◇ UNVERIFIED |
| CCCro-mat CO | Lincolnwood | — | ◇ UNVERIFIED |
| CHCustom Hard Chrome | Rosemont | — | ◇ UNVERIFIED |
| DBDavid Brown Hydraulics INC. | Franklin Park | — | ◇ UNVERIFIED |
 Dayton Superior CORP | Elk Grove Village | — | ◇ UNVERIFIED |
| DPDelta Precision Circuits | Elk Grove Village | — | ◇ UNVERIFIED |
| DMD Martin Enterprises INC | Chicago Heights | — | ◇ UNVERIFIED |
| DMDme Manufacturing | Skokie | — | ◇ UNVERIFIED |
| DIDover Industrial Chrome INC | Chicago | — | ◇ UNVERIFIED |
| DMDrawn Metal Products Division | Niles | — | ◇ UNVERIFIED |
| DPDrum Parts Midwest CO | Thornton | — | ◇ UNVERIFIED |
| EPEconomy Plating INC | Chicago | — | ◇ UNVERIFIED |
| EMEdsal Manufacturing CO INC | Chicago | — | ◇ UNVERIFIED |
| EMElectroplated Metal Solutions | Elk Grove Village | — | ◇ UNVERIFIED |
| ESEnameled Steel and Sign CO | Chicago | — | ◇ UNVERIFIED |
| EAEtch a Die Div of Best Cut Die | Skokie | — | ◇ UNVERIFIED |
