| Business | Phone |
| Schoor Depalma Inc 102 Pickering Way # 501, Exton 19341 | (610) 594-3500 |
| Figg Bridge Engineers Inc 100 Campbell Blvd, Exton 19341 | (610) 594-2460 |
| Mlea Inc 211 W Pool Rd, Exton 19341 | (610) 594-9310 |
| Keystone Engineering Group Inc 967 E Swedesford Rd # 300, Exton 19341 | (610) 407-4100 |