| Business | Phone |
| Bowman Tool & Machining 1310 Valleyhigh Dr Nw, Rochester 55901 | (507) 286-1400 |
| Comptech-Edm 2210 County Road 121 Ne, Rochester 55906 | (507) 285-3191 |
| Domaille Engineering Inc 7100 Dresser Dr Ne, Rochester 55906 | (507) 281-0275 |
| Professional Instruments Co 3601 Instrument Dr Nw, Rochester 55901 | (507) 288-6911 |
| Rochester Metalwerx & Mfg 3651 Valleyhigh Dr Nw, Rochester 55901 | (507) 288-5389 |
| Rochester Precision Machine 1016 Chester Ave Se, Rochester 55904 | (507) 289-7381 |