| Business | Phone |
| Young Engineering Inc 9928 Raddington Ln, Charlotte 28269 | (704) 549-9987 |
| Sutton-Kennerly & Assoc Inc 4651 Charlotte Park Dr # 150, Charlotte 28217 | (704) 424-9663 |
| Deltav Forensic Engrg Inc 1011 E Morehead St, Charlotte 28204 | (704) 333-3358 |