| Business | Phone |
| Pace Analytical Svc Inc 1423 N 8th St 122, Superior 54880 | (715) 392-5844 |
| Lerch Brothers Inc 3701 E Itasca St, Superior 54880 | (715) 398-5057 |
| Superior Testing Labs 410 Banks Ave, Superior 54880 | (715) 392-3605 |
| Oil Analyzer's Inc 925 Tower Ave, Superior 54880 | (715) 395-0222 |