| AEAvw Equipment Company INC. | Maywood | IL | Fabricated Metal Product Manufacturing332919 | 100-499 | ◐ LIKELY ACTIVE |
| BCB. C. Mathews CO. | Crystal Lake | IL | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| BWBernard Welding | Beecher | IL | Machinery Manufacturing333992 | 100-499 | ◐ LIKELY ACTIVE |
| BEBrennan Equipment & Mfg, Inc. | University Park | IL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| CBChicago Blower CORP | Glendale Heights | IL | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| CCColmac Coil Midwest | Paxton | IL | Fabricated Metal Product Manufacturing332410 | 100-499 | ◐ LIKELY ACTIVE |
| DPDanfoss Power Solutions (us) CO | Freeport | IL | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| DADomino Amjet INC | Gurnee | IL | Chemical Manufacturing325910 | 100-499 | ◐ LIKELY ACTIVE |
| DRD & R Autochuck Manufacturing, INC. | Rockford | IL | Machinery Manufacturing333515 | 1-19 | ◐ LIKELY ACTIVE |
| ETEklind Tool CO | Franklin Park | IL | Fabricated Metal Product Manufacturing332216 | 100-499 | ◐ LIKELY ACTIVE |
| EBEli Bridge CO | Jacksonville | IL | Machinery Manufacturing333998 | 1-19 | ◐ 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 |
Filtration Group INC | Joliet | IL | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| FSF.N. Smith Corporation | Oregon | IL | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
| FGForge Group Star LLC | Freeport | IL | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
| FCFulton CORP | Fulton | IL | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| GWGrundfos Water Utility INC | Aurora | IL | Machinery Manufacturing333914 | 20-99 | ◐ LIKELY ACTIVE |
| GGGsi Group LLC | Assumption | IL | Fabricated Metal Product Manufacturing332999 | 500+ | ◐ LIKELY ACTIVE |
| HEHaumiller Engineering | South Elgin | IL | Machinery Manufacturing333519 | 100-499 | ◐ LIKELY ACTIVE |
| HIHcc INC | Mendota | IL | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| HPHmc Products LLC | Caledonia | IL | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
| IPIllinois Pulley & Gear INC | Schaumburg | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Industrial Motion Control, LLC | Wheeling | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| ILInpro/seal LLC | Rock Island | IL | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
Kenyeri Consulting, LLC | Downers Grove | IL | Machinery Manufacturing333517 | 1-19 | ◐ LIKELY ACTIVE |
Kiwi Coders CORP | Wheeling | IL | Machinery Manufacturing333248 | 1-19 | ◐ LIKELY ACTIVE |
| LMLaystrom Manufacturing CO. | Chicago | IL | Fabricated Metal Product Manufacturing332312 | 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 |
| MPMi-jack Products, INC. | Hazel Crest | IL | Machinery Manufacturing333923 | 500+ | ◐ LIKELY ACTIVE |
| MPM&r Printing Equipment INC | Roselle | IL | Machinery Manufacturing333248 | 100-499 | ◐ LIKELY ACTIVE |
| PCPeddinghaus Corporation - Main | Bradley | IL | Machinery Manufacturing333512 | 100-499 | ◐ LIKELY ACTIVE |
| POPeerless of America INC | Effingham | IL | Primary Metal Manufacturing331316 | 20-99 | ◐ LIKELY ACTIVE |
| PHP & H Mfg CO | Shelbyville | IL | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
Progress Rail Locomotive INC. | Mccook | IL | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| PGProphet Gear CO. | Prophetstown | IL | Fabricated Metal Product Manufacturing332117 | 1-19 | ◐ LIKELY ACTIVE |
| RRevcor | Carpentersville | IL | Machinery Manufacturing333412 | 100-499 | ◐ LIKELY ACTIVE |
| SCSev-rend CORP | Collinsville | IL | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| SSSwenson Spreader CO | Lindenwood | IL | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| TCTri C CO INC | Eureka | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| USUnion Special CORP | Huntley | IL | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| WWWm. W. Meyer & Sons INC | Libertyville | IL | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| WWWm W Nugent & CO INC | Skokie | IL | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| YMYetter Manufacturing CO INC | Colchester | IL | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| ZCZenith Cutter INC | Loves Park | IL | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| ATA-1 Tool CORP | Melrose Park | IL | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| ATApex Tool Works | Rolling Meadows | IL | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| A3Azul 3d | Skokie | IL | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| ECEmpire Comfort Systems | Belleville | IL | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |