| Business | Phone |
| Technical Installations Unltd 10800 2nd Dr, Knoxville 37934 | (865) 966-8895 |
| C & M Piping 4215 Terrace Ave, Knoxville 37912 | (865) 599-2511 |
| Casey Installations 4623 Mill Branch Ln, Knoxville 37938 | (865) 922-6801 |
| Llb Contracting 6012 Morning Glory Pl, Knoxville 37912 | (865) 525-4194 |