| Business | Phone |
| Crescent Electric Supply Co 641 S Delaware Ave, Mason City 50401 | (641) 423-7042 |
| Culver-Hahn Electric Supply 221 5th St Sw, Mason City 50401 | (641) 423-6343 |
| Mid-State Distributing Co 2071 15th St Sw, Mason City 50401 | (641) 423-8012 |
| Van Meter Ind Inc 940 S Taft Ave, Mason City 50401 | (641) 423-7181 |