| Business | Phone |
| Gunnerson Equipment & Engnrng Po Box 2476, Darien 60561 | (630) 910-8630 |
| Induvsai Inc 8121 Ripple Rdg, Darien 60561 | (630) 435-5983 |
| Mtr Imports 18w194 Holly Ave, Darien 60561 | (630) 968-2027 |
| Sales Engineering Assoc 1009 Village Ct, Darien 60561 | (630) 852-2031 |
| Salmar Limited 1614 Clemens Rd, Darien 60561 | (630) 663-9700 |