| Business | Phone |
| Zell Machine Industries Inc N61w23195 Silver Spring Dr, Sussex 53089 | (262) 246-6801 |
| Tri-Star Tool & Machine Inc W245n5474 S Corporate Cir, Sussex 53089 | (262) 820-1859 |
| Sussex Gundrilling W227n6165 Sussex Rd, Sussex 53089 | (262) 246-9990 |
| Golner Precision Products Inc W248n5435 Executive Dr, Sussex 53089 | (262) 820-8900 |
| Heim Mfg Corp N53w24950 S Corporate Cir 3, Sussex 53089 | (262) 820-9090 |
| Klm Machining W227n6165 Sussex Rd, Sussex 53089 | (262) 246-9999 |
| Merritt Tool & Mfg W245n5546 S Corporate Cir, Sussex 53089 | (262) 246-4870 |