| Business | Phone |
| Flextron Circuit Assembly 808 N Central Ave B, Wood Dale 60191 | (630) 766-1000 |
| Industrial Engineering & Equip 757 N Edgewood Ave, Wood Dale 60191 | (630) 350-8266 |
| Litronicx 860 Sivert Dr, Wood Dale 60191 | (630) 766-7848 |
| Milcon 600 Wheat Ln, Wood Dale 60191 | (630) 595-1661 |
| Phoenix Co Of Chicago Inc 555 Pond Dr, Wood Dale 60191 | (630) 595-2301 |
| Phoenix Systems & Svc Inc 945 N Edgewood Ave A, Wood Dale 60191 | (630) 860-9501 |
| Ready Electric Supl & Sales Co 376 E Irving Park Rd, Wood Dale 60191 | (630) 766-8140 |
| Senior Industries 610 Pond Dr, Wood Dale 60191 | (630) 350-1600 |
| Star Security Systems Inc 655 N Central Ave E, Wood Dale 60191 | (630) 350-7827 |