| Business | Phone |
| Cedar Manufacturing 1 Fredericksburg Ct, Madison 53718 | (608) 245-6463 |
| Dickinson Manufacturing Sltns 3066 Progress Rd, Madison 53716 | (608) 222-3489 |
| Sourceone Solutions Llc 406 Science Dr, Madison 53711 | (608) 238-9998 |
| Production Machine & Ents Corp 2334 Pennsylvania Ave, Madison 53704 | (608) 249-6585 |
| J & M Machining Ltd 801 Mayfair Ave, Madison 53714 | (608) 244-0333 |
| Jenkins Research & Mfg 2895 Commerce Park Dr, Madison 53719 | (608) 277-9441 |
| K & F Machining Inc 833 Stewart St, Madison 53713 | (608) 271-9666 |
| Knabe Tool Works Inc 2302 Pennsylvania Ave, Madison 53704 | (608) 249-7383 |
| Mad-City Mfg & Machine Inc 4423 Robertson Rd, Madison 53714 | (608) 242-5358 |