| Business | Phone |
| Alstom Power 1409 Centerpoint Blvd, Knoxville 37932 | (865) 693-7550 |
| Cleveland Controls Inc 305 Ogle Ave, Knoxville 37920 | (865) 577-0916 |
| Control Management Inc 333 Troy Cir # Y, Knoxville 37919 | (865) 584-0208 |
| Rosemont Inc 1701 Winston Rd, Knoxville 37919 | (865) 690-7572 |
| Rosemount Inc 1908 Bishops Bridge Rd, Knoxville 37922 | (865) 690-4003 |
| Daly Instrumentation & Control 6426 Baum Dr, Knoxville 37919 | (865) 584-6055 |
| Quad City Control Co 3110 Henson Rd # B12, Knoxville 37921 | (865) 588-5510 |
| Fluid Flow Of Tennessee Inc 6701 Baum Dr # 245, Knoxville 37919 | (865) 588-1012 |
| Mountaintop Instrument Svc 3605 Rochdale Ln, Knoxville 37931 | (865) 539-2280 |
| Micro Motion Inc Knoxville 37923 | (865) 690-8955 |
| Johnson Controls Inc 6101 Industrial Heights Dr, Knoxville 37909 | (865) 588-1197 |
| Jrb Controls Inc 3 Forest Ct, Knoxville 37919 | (865) 588-2937 |