| Business | Phone |
| Dzinit Now Inc 1305 Remington Rd, Schaumburg 60173 | (847) 884-9594 |
| Jas Assoc 1355 Remington Rd U, Schaumburg 60173 | (847) 310-9400 |
| Kcs Corp 1340 Remington Rd G, Schaumburg 60173 | (847) 490-8200 |
| Marchris Engineering Ltd 100 E State Pkwy, Schaumburg 60173 | (847) 885-8357 |
| M A C Construction 1930 Thoreau Dr N 186, Schaumburg 60173 | (847) 397-3300 |
| Metro Design 895 American Ln, Schaumburg 60173 | (847) 619-1333 |
| Safina Inc 953 N Plum Grove Rd, Schaumburg 60173 | (847) 605-8319 |
| Science Applications Intl Corp 1515 E Woodfield Rd 960, Schaumburg 60173 | (847) 330-2500 |
| Toda America Inc 1920 Thoreau Dr N 110, Schaumburg 60173 | (847) 397-7060 |
| Transystems Corp 1051 Perimeter Dr 1025, Schaumburg 60173 | (847) 605-9600 |
| Marchris Moore & Assoc 2300 Barrington Rd, Schaumburg 60194 | (847) 885-2570 |
| Sunnyside Design Group 909 Ridgeway Ct, Schaumburg 60194 | (847) 884-9870 |
| Tariff Research 2400 Hassell Rd 400, Schaumburg 60194 | (847) 882-4433 |
| Pirnie Malcolm 1515 E Woodfield Rd 360, Schaumburg 60173 | (847) 517-8114 |
| Midwest Engineering Svc 1109 Tower Rd, Schaumburg 60173 | (847) 843-7001 |
| National Engineering Tech Corp 650 E Algonquin Rd 104, Schaumburg 60173 | (847) 925-0120 |
| Tbe Group Inc 700 Cooper Ct D, Schaumburg 60173 | (847) 885-8846 |
| Thermal Energy 1560 Laburnum Rd, Schaumburg 60192 | (847) 995-1926 |
| Tishma Investments Llc 101 E State Pkwy, Schaumburg 60173 | (847) 755-1200 |
| Tms 2101 Hammond Dr, Schaumburg 60173 | (847) 397-2100 |
| Wireless Concepts 1375 Remington Rd O, Schaumburg 60173 | (847) 885-1445 |
| Hititman & Assoc 293 Sheffield Dr, Schaumburg 60194 | (847) 798-9951 |
| Wight Realty Group 1901 N Roselle Rd 100, Schaumburg 60195 | (847) 839-9200 |