| ECEle Corporation | Mccook, IL | Chemical Manufacturing325180 | 20–99 | ● ACTIVE |
Elgin Sweeper Company | Elgin, IL | Machinery Manufacturing333924 | 100–499 | ● ACTIVE |
Ella Engineering Incorporated | Elk Grove Village, IL | Fabricated Metal Product Manufacturing332721 | 20–99 | ● ACTIVE |
Engis Corporation | Wheeling, IL | Nonmetallic Mineral Product Manufacturing327910 | 100–499 | ● ACTIVE |
Enviro Tech International INC | Melrose Park, IL | Chemical Manufacturing325998 | — | ● ACTIVE |
Farmington Foods, INC | Forest Park, IL | Food Manufacturing311611 | 100–499 | ● ACTIVE |
| FCFederal-mogul CORP | Skokie, IL | Machinery Manufacturing333618 | 500+ | ● ACTIVE |
| FSFew Spirits LLC | Evanston, IL | Beverage and Tobacco Product Manufacturing312140 | 1–19 | ● ACTIVE |
| FVFleischmann's Vinegar CO INC | Chicago, IL | Food Manufacturing311941 | 20–99 | ● ACTIVE |
| FFFontanini Foods LLC | Mccook, IL | Food Manufacturing311612 | 100–499 | ● ACTIVE |
Fotofab, LLC | Chicago, IL | Fabricated Metal Product Manufacturing332812 | 20–99 | ● ACTIVE |
Gallagher CORP | Gurnee, IL | Plastics and Rubber Products Manufacturing326291 | 20–99 | ● ACTIVE |
Gallagher Materials CORP. | Thornton, IL | Petroleum and Coal Products Manufacturing324121 | 1–19 | ● ACTIVE |
Gam Enterprises, LLC | Mount Prospect, IL | Machinery Manufacturing333612 | 20–99 | ● ACTIVE |
| GMGc Mfg America LLC | Alsip, IL | Chemical Manufacturing325520 | 100–499 | ● ACTIVE |
Guardian Electric Manufacturing CO | Woodstock, IL | Plastics and Rubber Products Manufacturing326199 | 20–99 | ● ACTIVE |
G & W Electric CO | Bolingbrook, IL | Electrical Equipment, Appliance & Component Manufacturing335313 | 500+ | ● ACTIVE |
Henry Broch & CO. | Waukegan, IL | Food Manufacturing311612 | 100–499 | ● ACTIVE |
H. Kramer & CO | Chicago, IL | Primary Metal Manufacturing331420 | 100–499 | ● ACTIVE |
Hu-friedy Mfg. Co., LLC | Chicago, IL | Miscellaneous Manufacturing339114 | — | ● ACTIVE |
Indak Manufacturing CORP | Northbrook, IL | Computer and Electronic Product Manufacturing334413 | 100–499 | ● ACTIVE |
| IPIndiana Pickling & Processing Company | Portage, IN | Primary Metal Manufacturing331221 | 20–99 | ● ACTIVE |
Induction Heat Treating CORP. | Crystal Lake, IL | Fabricated Metal Product Manufacturing332811 | 20–99 | ● ACTIVE |
| IIIronwood Industries INC | Libertyville, IL | Plastics and Rubber Products Manufacturing326199 | 20–99 | ● ACTIVE |
J6 Polymers LLC | Genoa, IL | Chemical Manufacturing325211 | — | ● ACTIVE |
Jessup Manufacturing CO | Lake Bluff, IL | Textile Mills313320 | — | ● ACTIVE |
J. H. Botts, LLC | Joliet, IL | Primary Metal Manufacturing331110 | 20–99 | ● ACTIVE |
| JHJohn Hofmeister & Son INC | Chicago, IL | Food Manufacturing311612 | — | ● ACTIVE |
| JAJupiter Aluminum CORP | Hammond, IN | Primary Metal Manufacturing331315 | 100–499 | ● ACTIVE |
Kastalon INC | Alsip, IL | Chemical Manufacturing325211 | 20–99 | ● ACTIVE |
Kepner Products CO | Villa Park, IL | Fabricated Metal Product Manufacturing332912 | 20–99 | ● ACTIVE |
Koval INC. | Chicago, IL | Beverage and Tobacco Product Manufacturing312140 | — | ● ACTIVE |
Lang Dental Manufacturing CO INC | Wheeling, IL | Miscellaneous Manufacturing339114 | — | ● ACTIVE |
Magnetic Inspection Laboratory, INC | Elk Grove Village, IL | Fabricated Metal Product Manufacturing332812 | 100–499 | ● ACTIVE |
| MIMagnetrol International INC | Aurora, IL | Computer and Electronic Product Manufacturing334513 | 100–499 | ● ACTIVE |
Mah Machine Company | Cicero, IL | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
Marathon Cutting Die INC | Wheeling, IL | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
Mason CORP | Schererville, IN | Chemical Manufacturing325180 | 20–99 | ● ACTIVE |
| MSMaterial Sciences CORP | Elk Grove Village, IL | Fabricated Metal Product Manufacturing332812 | 20–99 | ● ACTIVE |
Mech Tronics CORP | Melrose Park, IL | Fabricated Metal Product Manufacturing332322 | 20–99 | ● ACTIVE |
| MSMerit Steel Company | Kouts, IN | Primary Metal Manufacturing331222 | 20–99 | ● ACTIVE |
Midwest Printed Circuit Services, INC | Round Lake Beach, IL | Computer and Electronic Product Manufacturing334412 | — | ● ACTIVE |
Mistica Foods LLC | Addison, IL | Food Manufacturing311612 | — | ● ACTIVE |
Modern Forge Indiana LLC | Merrillville, IN | Fabricated Metal Product Manufacturing332111 | 100–499 | ● ACTIVE |
Morey CORP | Woodridge, IL | Computer and Electronic Product Manufacturing334412 | 100–499 | ● ACTIVE |
Murphy Machine Products, INC. | Wood Dale, IL | Fabricated Metal Product Manufacturing332721 | 20–99 | ● ACTIVE |
Nanograf Corporation | Chicago, IL | Chemical Manufacturing325180 | 20–99 | ● ACTIVE |
National Technology, INC. | Rolling Meadows, IL | Computer and Electronic Product Manufacturing334412 | 20–99 | ● ACTIVE |
| NPNippon Paint Automotive Americas INC | Lansing, IL | Chemical Manufacturing325510 | 100–499 | ● ACTIVE |
| NSNouryon Surface Chemistry LLC | Morris, IL | Chemical Manufacturing325199 | 100–499 | ● ACTIVE |