Abbott Molecular INC. | Des Plaines | — | ● ACTIVE |
Ab Specialty Silicones, LLC | Waukegan | 20–99 | ● ACTIVE |
| ACAfton Chemical Corporation | Sauget | 100–499 | ● ACTIVE |
| APAlto Pekin LLC | Pekin | 100–499 | ● ACTIVE |
Apl Engineered Materials, INC | Urbana | 20–99 | ● ACTIVE |
| BRBig River Resources Galva, LLC | Galva | 20–99 | ● ACTIVE |
| BRBiourja Renewables, LLC | Peoria | 100–499 | ● ACTIVE |
| CCCabot Corporation | Tuscola | 20–99 | ● ACTIVE |
| CBCsl Behring | Bradley | 500+ | ● ACTIVE |
| DTDental Technologies INC | Lincolnwood | 20–99 | ● ACTIVE |
Eichrom Technologies LLC | Lisle | 20–99 | ● ACTIVE |
| ECEle Corporation | Mccook | 20–99 | ● ACTIVE |
Enviro Tech International INC | Melrose Park | — | ● ACTIVE |
| ELEpsilyte LLC | Peru | 20–99 | ● ACTIVE |
| GMGc Mfg America LLC | Alsip | 100–499 | ● ACTIVE |
| GPGreen Plains Madison LLC | Madison | 20–99 | ● ACTIVE |
J6 Polymers LLC | Genoa | — | ● ACTIVE |
Kastalon INC | Alsip | 20–99 | ● ACTIVE |
| LALincolnland Agri-energy LLC | Palestine | 20–99 | ● ACTIVE |
Nanograf Corporation | Chicago | 20–99 | ● ACTIVE |
| NPNippon Paint Automotive Americas INC | Lansing | 100–499 | ● ACTIVE |
| NSNouryon Surface Chemistry LLC | Morris | 100–499 | ● ACTIVE |
| NANufarm Americas INC | Alsip | 20–99 | ● ACTIVE |
| NPNyco Products CO | Countryside | 20–99 | ● ACTIVE |
| RTRegis Technologies INC | Morton Grove | 20–99 | ● ACTIVE |
| RSReg Seneca, LLC | Seneca | 20–99 | ● ACTIVE |
| SISabic Innovative Plastics US LLC | Ottawa | 100–499 | ● ACTIVE |
Sandstrom Products Company | Port Byron | 20–99 | ● ACTIVE |
Smith & Richardson Manufacturing CO | Geneva | 20–99 | ● ACTIVE |
| ALAbbott Laboratories INC. | Abbott Park | — | ● ACTIVE |
| AIAbbvie INC | North Chicago | — | ● ACTIVE |
| AIAccu-labs, INC. | Chicago | — | ● ACTIVE |
Altathera Pharmaceuticals LLC | Chicago | 20–99 | ● ACTIVE |
Apex Engineering Products CORP | Aurora | — | ● ACTIVE |
A-s Medication Solutions LLC | Libertyville | — | ● ACTIVE |
| APAstellas Pharma Us, INC. | Northbrook | 500+ | ● ACTIVE |
Britt Industries, INC | Arlington Heights | — | ● ACTIVE |
| CCCynamic Chemical Company | Batavia | 20–99 | ● ACTIVE |
Daubert Chemical Company, INC. | Chicago | — | ● ACTIVE |
| DADomino Amjet INC | Gurnee | 100–499 | ● ACTIVE |
E K Industries, INC. | Joliet | — | ● ACTIVE |
Gibraltar Chemical Works INC | South Holland | — | ● ACTIVE |
| GNG.j. Nikolas & Co., INC. | Bellwood | 1–19 | ● ACTIVE |
Ilmo Products CO | Jacksonville | — | ● ACTIVE |
International Paint LLC | Waukegan | — | ● ACTIVE |
Kocour CO | Chicago | — | ● ACTIVE |
| NPNakoma Products, LLC | Bridgeview | — | ● ACTIVE |
Nalco Company LLC | Naperville | — | ● ACTIVE |
Obiter Research LLC | Champaign | — | ● ACTIVE |
Plz CORP | Downers Grove | — | ● ACTIVE |