| Business | Phone |
| Transmission Technologies Corp 4080 Bennett Rd # E, Toledo 43612 | (419) 470-8200 |
| Dana Corp 4500 Dorr St, Toledo 43615 | (419) 535-4500 |
| Sigma Engineering & Manufacturer 3130 South Ave, Toledo 43609 | (419) 385-7040 |
| New Mather Metals Inc 5270 N Detroit Ave, Toledo 43612 | (419) 476-9311 |