| Business | Phone |
| Hinerman Tool Co 292 Howland Wilson Rd Se, Warren 44484 | (330) 856-3123 |
| Northeastern Machining 775 1/2 Niles Rd Se, Warren 44483 | (330) 395-4942 |
| Phoenix Tool Co 1351 Phoenix Rd Ne, Warren 44483 | (330) 372-4627 |
| Vanguard Die & Machine 2070 Mcmyler St Nw, Warren 44485 | (330) 394-4170 |