| Business | Phone |
| Ibm Pittsburgh Fed Cu 800 Vinial St, Pittsburgh 15212 | (412) 322-6220 |
| R G Technology 607 California Ave, Pittsburgh 15202 | (412) 761-3699 |
| Advanced Electrocircuits Corp Circuit Boards 750 TRUMBULL DRIVE, Pittsburgh 15205 | (412) 428-9487 |
| Innovative Electronics Corporation 750 Trumbull Drive, Pittsburgh 15205 | (412) 276-0711 |