| Business | Phone |
| Applied Control Concepts Inc 8865 N 55th St, Milwaukee 53223 | (414) 362-7880 |
| Eaton Corporation 4201 N 27th St, Milwaukee 53216 | (414) 449-6207 |
| General Electric Co 2421 N Mayfair Rd, Milwaukee 53226 | (414) 778-0259 |
| Industrial Communications 2300 W Camden Rd, Milwaukee 53209 | (414) 228-7467 |
| Jordan Controls Inc 5607 W Douglas Ave, Milwaukee 53218 | (414) 461-9200 |
| Lawless Sales Inc 5359 N 118th Ct, Milwaukee 53225 | (414) 393-1400 |
| Lem Usa 6643 W Mill Rd, Milwaukee 53218 | (414) 353-0711 |
| M C Sales Inc 9130 N Pelham Pkwy, Milwaukee 53217 | (414) 352-3002 |
| Utility Graphics Inc 4060 N 34th St, Milwaukee 53216 | (414) 871-5701 |