| HPHa Phillips & CO | Dekalb | IL | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| PMPhoenix Modular Elevator LLC | Mount Vernon | IL | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| PCPrintjet CORP | Machesney Park | IL | Machinery Manufacturing333993 | — | ◇ UNVERIFIED |
| UGUniversal Grinding & Tool Service INC | Berkeley | IL | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| WIWorksaver INC | Litchfield | IL | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| ATAjax Tool Works INC | Franklin Park | IL | Machinery Manufacturing333515 | — | ◐ LIKELY ACTIVE |
| AEAmerican Event Services LLC | Danville | IL | Machinery Manufacturing333415 | 20-99 | ◐ LIKELY ACTIVE |
| AEAvw Equipment Company INC. | Maywood | IL | Fabricated Metal Product Manufacturing332919 | 100-499 | ◐ LIKELY ACTIVE |
| BLBimba, LLC | University Park | IL | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| BEBrennan Equipment & Mfg, Inc. | University Park | IL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| BIBushnell Illinois Tank CO | Bushnell | IL | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| CTCarlinville Truck Equipment INC | Carlinville | IL | Machinery Manufacturing333924 | — | ◐ LIKELY ACTIVE |
| CICaterpillar INC | Peoria | IL | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| CPChampion Pneumatic Machinery | Princeton | IL | Machinery Manufacturing333912 | — | ◐ LIKELY ACTIVE |
| CACnh America, LLC | Goodfield | IL | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| DADixon Automatic Tool INC | Rockford | IL | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| EIEcolab INC | Elk Grove Village | IL | Machinery Manufacturing333298 | — | ◐ LIKELY ACTIVE |
| EME-quip Manufacturing Co., INC. | Frankfort | IL | Machinery Manufacturing333241 | 20-99 | ◐ LIKELY ACTIVE |
| FSFabrication Specialists INC | Alton | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| FIFarmweld INC. | Teutopolis | IL | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| FSF.N. Smith Corporation | Oregon | IL | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
| FCFulton CORP | Fulton | IL | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| GDGardner - Denver Petroleum Equipment | Quincy | IL | Machinery Manufacturing333911 | — | ◐ LIKELY ACTIVE |
| GFGetz Fire Equipment Company | Peoria | IL | Machinery Manufacturing333999 | — | ◐ LIKELY ACTIVE |
| GWGrundfos Water Utility INC | Aurora | IL | Machinery Manufacturing333914 | 20-99 | ◐ LIKELY ACTIVE |
| HEHaumiller Engineering | South Elgin | IL | Machinery Manufacturing333519 | 100-499 | ◐ LIKELY ACTIVE |
| HDH.C. Duke and Son, LLC | East Moline | IL | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| HEHills Engineering Inc. | Carol Stream | IL | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
| HGHyster-yale Group, INC. | Danville | IL | Machinery Manufacturing333924 | — | ▲ REPORTED CLOSED |
| IPIllinois Pulley & Gear INC | Schaumburg | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| ICIngersoll Cutting Tool Company | Rockford | IL | Machinery Manufacturing333515 | 100-499 | ◐ LIKELY ACTIVE |
| ITITW Trans Tech | Carol Stream | IL | Machinery Manufacturing333244 | 20-99 | ◐ LIKELY ACTIVE |
| JCJnr Custo-matic Screw, INC. | Glendale Heights | IL | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| KCKb Cores | Kankakee | IL | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| KKomline-Barnes | Rockford | IL | Machinery Manufacturing333999 | 100-499 | ◐ LIKELY ACTIVE |
| MTManor Tool & Mfg CO | Schiller Park | IL | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| MEMaren Engineering CORP | South Holland | IL | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| MAMartin Automatic CO | Rockford | IL | Machinery Manufacturing333244 | 100-499 | ◐ LIKELY ACTIVE |
| MEMartin Engineering | Neponset | IL | Machinery Manufacturing333131 | 100-499 | ◐ LIKELY ACTIVE |
| MMMennie Machine CO | Mark | IL | Fabricated Metal Product Manufacturing332721 | 100-499 | ◐ LIKELY ACTIVE |
| MPMi-jack Products, INC. | Hazel Crest | IL | Machinery Manufacturing333923 | — | ◐ LIKELY ACTIVE |
| MPModern Process Equipment INC | Chicago | IL | Machinery Manufacturing333241 | 20-99 | ◐ LIKELY ACTIVE |
| NNvenia | Wood Dale | IL | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
Oerlikon Balzers Coating USA Inc - Geneva, IL | Geneva | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| PPamarcoBatavia | Batavia | IL | Machinery Manufacturing333244 | 20-99 | ◐ LIKELY ACTIVE |
| PPPanacea Products / Kay Home | Antioch | IL | Machinery Manufacturing333112 | 20-99 | ◐ LIKELY ACTIVE |
| PCPeddinghaus Corporation - ASW | Kankakee | IL | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| PCPeddinghaus Corporation - Main | Bradley | IL | Machinery Manufacturing333512 | 100-499 | ◐ LIKELY ACTIVE |
| PLPregis LLC | Elgin | IL | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| PGProphet Gear CO. | Prophetstown | IL | Fabricated Metal Product Manufacturing332117 | 1-19 | ◐ LIKELY ACTIVE |