| Business | Phone |
| Machine Control Systems Inc 307 W Tremont Ave # U, Charlotte 28203 | (704) 332-3363 |
| Westinghouse Process Control 901 Center Park Dr, Charlotte 28217 | (704) 357-0294 |
| Yamas Controls 3308 Oak Lake Blvd # B, Charlotte 28208 | (704) 357-1999 |
| Vector Logic 4012 N Graham St, Charlotte 28206 | (704) 343-0099 |
| Blum National Controls Inc 6500 Sardis Rd, Charlotte 28270 | (704) 365-9088 |
| Nova Technologies 9009 Perimeter Woods Dr, Charlotte 28216 | (704) 329-0551 |
| Ca America 14201 S Lakes Dr, Charlotte 28273 | (704) 329-0200 |
| Siemens Building Technologies 2201 Crownpoint Executive # K, Charlotte 28227 | (704) 847-1680 |
| Crown Control Inc Co 2316 Crownpoint Executive Dr, Charlotte 28227 | (704) 841-1622 |
| Emerson Process Management 9100 Perimeter Woods Dr # F, Charlotte 28216 | (704) 598-5660 |
| Facility Robotics 4711 Nations Crossing Rd # B, Charlotte 28217 | (704) 525-2374 |
| G W Howlett Co 121 Greenwich Rd # 104, Charlotte 28211 | (704) 364-6908 |