| Business | Phone |
| Tram Tech Inc 807 S Delaney Rd, Owosso 48867 | (989) 723-2944 |
| Ted Senk Tooling 1117 E Henderson Rd, Owosso 48867 | (989) 725-6067 |
| Don Gray Inc 5992 N Seymour Rd, Owosso 48867 | (989) 723-3393 |
| Owosso Machine Co 521 S Washington St, Owosso 48867 | (989) 725-6025 |