| A Stars & Stripes Flag Co | 847-253-4716 | 540 Lois Ct | Mount Prospect | IL | 60056 |
| Amer Erectors Inc | 847-439-5669 | 516 Thorndale Ave | Elk Grove Village | IL | 60007 |
| American Banner Co | 847-296-4450 | 500 E Touhy Ave | Des Plaines | IL | 60018 |
| C & H Building Specialties Inc | 847-520-5580 | 603 Chaddick Dr | Wheeling | IL | 60090 |
| Chase Brass & Copper Co | 847-696-9305 | 1300 Brophy Ave | Park Ridge | IL | 60068 |
| City Iron Works | 847-888-8898 | 254 N State St | Elgin | IL | 60123 |
| Cohn Seymour | 847-623-1721 | 1224 North Ave | Waukegan | IL | 60085 |
| Creative Brass & Metalworks Inc | 847-740-7934 | 34691 N Wilson Rd | Ingleside | IL | 60041 |
| Deck Metals Inc | 847-622-1401 | 551 Stevenson Rd | South Elgin | IL | 60177 |
| Douglas Iron Works Inc | 847-381-1189 | 28w19 Industrial Ave | Barrington | IL | 60010 |
| Eagle Flag & Banner Co | 847-223-6655 | 204 Siwiha Dr | Grayslake | IL | 60030 |
| Enigma | 847-949-8281 | 438 Morris Ave | Mundelein | IL | 60060 |
| Fortino Robert Consulting Co | 847-487-1455 | 429 Edgewater Ln | Wauconda | IL | 60084 |
| Frost Jack Iron Works | 847-587-6068 | 90 Honing Rd | Fox Lake | IL | 60020 |
| Kd Iron Works | 847-991-3039 | 542 W Colfax St | Palatine | IL | 60067 |
| Northwest Structural Steel Inc | 847-882-6000 | 1500 Hicks Rd | Roselle | IL | 60172 |
| Northwest Structural Steel Inc | 847-577-1300 | 1500 Hicks Rd | Arlington Heights | IL | 60005 |
| Pacific Steel Fabricators | 847-297-8087 | 245 W Old Higgins Rd | Des Plaines | IL | 60018 |
| Residential Steel Fabricators Basement & Lt St | 847-695-3400 | 1555 Gilpen Ave | South Elgin | IL | 60177 |
| Six Flags Great America Business Offices | 847-249-2133 | Interstate Hwy 94 & Rt 132 | Gurnee | IL | 60031 |
| Six Flags Great America Employment | 847-249-2045 | Interstate Hwy 94 & Rt 132 | Gurnee | IL | 60031 |
| Six Flags Great America Group Sales | 847-249-1952 | Interstate Hwy 94 & Rt 132 | Gurnee | IL | 60031 |
| Stair One Inc | 847-234-8101 | 1343 N Western Ave | Lake Forest | IL | 60045 |
| Waukegan Architectural Inc | 847-746-9077 | 3505 16th St | Zion | IL | 60099 |
