| NPNyco Products CO | Countryside | IL | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
Oakland Industries LTD | Mount Prospect | IL | Electrical Equipment, Appliance & Component Manufacturing335313 | 100-499 | ● ACTIVE |
Oak Ridge Products, LLC | Mchenry | IL | Plastics and Rubber Products Manufacturing326199 | 1-19 | ● ACTIVE |
Obiter Research LLC | Champaign | IL | Chemical Manufacturing325199 | 1-19 | ● ACTIVE |
| OCO. C. Keckley Company | Skokie | IL | Fabricated Metal Product Manufacturing332911 | 20-99 | ● ACTIVE |
Odin Fabrication, INC. | Elburn | IL | Fabricated Metal Product Manufacturing332322 | 1-19 | ● ACTIVE |
Olsun Electrics CORP | Richmond | IL | Computer and Electronic Product Manufacturing334416 | 20-99 | ● ACTIVE |
Olympic Controls CORP | Bartlett | IL | Machinery Manufacturing333914 | — | ● ACTIVE |
Onsite Woodwork CORP | Loves Park | IL | Furniture and Related Product Manufacturing337212 | — | ● ACTIVE |
Orthopedic Generations LLC | Mokena | IL | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
| OGOsi Group | Geneva | IL | Food Manufacturing311412 | 100-499 | ● ACTIVE |
| OIOsi Industries LLC | Chicago | IL | Food Manufacturing311412 | 500+ | ● ACTIVE |
Otto Engineering INC | Carpentersville | IL | Electrical Equipment, Appliance & Component Manufacturing335314 | 500+ | ● ACTIVE |
Ozinga On-site INC | Mokena | IL | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ● ACTIVE |
Pacific Bearing Company | Roscoe | IL | Fabricated Metal Product Manufacturing332999 | 100-499 | ● ACTIVE |
Pacific Press Holdings LLC | Mount Carmel | IL | Machinery Manufacturing333517 | 20-99 | ● ACTIVE |
Panek Precision Products LLC | Northbrook | IL | Fabricated Metal Product Manufacturing332710 | 100-499 | ● ACTIVE |
Paratech INC | Frankfort | IL | Plastics and Rubber Products Manufacturing326220 | 100-499 | ● ACTIVE |
Parr Instrument Company | Moline | IL | Computer and Electronic Product Manufacturing334513 | 20-99 | ● ACTIVE |
Paxxus INC | Addison | IL | Paper Manufacturing322220 | 100-499 | ● ACTIVE |
Payson Casters, INC | Gurnee | IL | Fabricated Metal Product Manufacturing332510 | 20-99 | ● ACTIVE |
Peerless Industries, INC. | Aurora | IL | Fabricated Metal Product Manufacturing332999 | 100-499 | ● ACTIVE |
| PAPeerless-premier Appliance CO. | Belleville | IL | Electrical Equipment, Appliance & Component Manufacturing335220 | 20-99 | ● ACTIVE |
Pegasus Mfg INC | Galesburg | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Performance Health Systems LLC | Northbrook | IL | Miscellaneous Manufacturing339920 | — | ● ACTIVE |
| PDPerry Dynamics INC | Decatur | IL | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
Pewag INC | Bolingbrook | IL | Fabricated Metal Product Manufacturing332618 | 100-499 | ● ACTIVE |
Pickard INC | Antioch | IL | Nonmetallic Mineral Product Manufacturing327110 | 1-19 | ● ACTIVE |
Plastic Parts International, INC | Loves Park | IL | Plastics and Rubber Products Manufacturing326199 | 20-99 | ● ACTIVE |
Plz CORP | Downers Grove | IL | Food Manufacturing311225 | 500+ | ● ACTIVE |
| PFPmp Fermentation Products INC | Peoria | IL | Chemical Manufacturing325199 | 20-99 | ● ACTIVE |
Polaris Laser Laminations, LLC | West Chicago | IL | Fabricated Metal Product Manufacturing332999 | 20-99 | ● ACTIVE |
Polar Tech Industries INC | Genoa | IL | Plastics and Rubber Products Manufacturing326140 | — | ● ACTIVE |
| PPolyconversions | Champaign | IL | Chemical Manufacturing325211 | 100-499 | ● ACTIVE |
| PKPork King Packing, Inc. | Marengo | IL | Food Manufacturing311611 | 100-499 | ● ACTIVE |
Prairie Farms Dairy, INC. | Rockford | IL | Food Manufacturing311511 | — | ● ACTIVE |
Precision Dose INC | South Beloit | IL | Chemical Manufacturing325412 | 100-499 | ● ACTIVE |
Precision Vision, INC. | Woodstock | IL | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
Premier Print & Services Group, INC | Chicago | IL | Printing and Related Support Activities323111 | 20-99 | ● ACTIVE |
Premier Woodwork INC | Rockford | IL | Furniture and Related Product Manufacturing337212 | 1-19 | ● ACTIVE |
Press America INC | Elk Grove Village | IL | Printing and Related Support Activities323110 | 20-99 | ● ACTIVE |
Preston Industries INC | Niles | IL | Computer and Electronic Product Manufacturing334513 | 100-499 | ● ACTIVE |
Prochem Incorporated International | Rockford | IL | Chemical Manufacturing325130 | 1-19 | ● ACTIVE |
Progressive Recovery INC | Dupo | IL | Fabricated Metal Product Manufacturing332420 | — | ● ACTIVE |
Prooptics LLC | Palatine | IL | Miscellaneous Manufacturing339112 | 1-19 | ● ACTIVE |
Proteintech Group, INC. | Rosemont | IL | Chemical Manufacturing325414 | 20-99 | ● ACTIVE |
| PCPrysmian Cables & Systems USA LLC | Du Quoin | IL | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
Pureaire Monitoring Systems INC | Lake Zurich | IL | Computer and Electronic Product Manufacturing334513 | 20-99 | ● ACTIVE |
Quality Metal Products INC | Peoria | IL | Fabricated Metal Product Manufacturing332710 | 100-499 | ● ACTIVE |
| QSQuality Snack Foods INC | Alsip | IL | Food Manufacturing311612 | 100-499 | ● ACTIVE |