| Business | Phone |
| Air Corp 200 Peachtree Dr S, Charlotte 28217 | (704) 523-3758 |
| Allied Sheet Metal Works Inc 612 Charles Ave, Charlotte 28205 | (704) 376-8469 |
| Border Concepts Inc 10450 Park Rd, Charlotte 28210 | (704) 541-5509 |
| Paul Norman Co 5820 Dixie Rd, Charlotte 28278 | (704) 588-1911 |
| Carolina Steel Products 8700 Wilkinson Blvd, Charlotte 28214 | (704) 394-0361 |
| Quality Products & Machine Co 4600 Westinghouse Blvd, Charlotte 28273 | (704) 504-3330 |
| Classic Sheet Metal Inc 4010 Hartley St # A, Charlotte 28206 | (704) 596-5186 |