| Business | Phone |
| Aircraft Quality Welding Inc Rr 3 Stn Main, Penetanguishene L9M 1R3 | (705) 533-2441 |
| Charlebois Welding & Fab 566 Champlain Rd, Penetanguishene L9M 1R2 | (705) 549-6760 |
| Dusomes Mechanical 849 Conc 17 E, Penetanguishene L9M 1R2 | (705) 549-5296 |