| Business | Phone |
| Anthony Erdman Assoc 3 Crossgate Dr # 100, Mechanicsburg 17050 | (717) 766-1741 |
| Arro Group 4750 Delbrook Rd # 101, Mechanicsburg 17050 | (717) 975-3995 |
| Centerpoint Engineering 2 Market Plaza Way, Mechanicsburg 17055 | (717) 795-8575 |
| Dixon Structural Consultants Mechanicsburg 17050 | (717) 795-8324 |
| Earth Tech Inc 2 Market Plaza Way # A, Mechanicsburg 17055 | (717) 795-8001 |
| Eres-Harrisburg 4913 Gettysburg Rd # 102, Mechanicsburg 17055 | (717) 691-7625 |
| Food Engineering Inc 4750 Delbrook Rd # 102, Mechanicsburg 17050 | (717) 761-3731 |
| Greenhorne & O'Mara Inc 5000 Ritter Rd # 102, Mechanicsburg 17055 | (717) 691-3355 |
| Kci Technologies Inc 5001 Louise Dr # 201, Mechanicsburg 17055 | (717) 691-1340 |
| Modjeski & Masters 4909 Louise Dr # 201, Mechanicsburg 17055 | (717) 790-9565 |
| Northrop Grumman It 5006 E Trindle Rd # 103, Mechanicsburg 17050 | (717) 790-0300 |
| Urban Engineers Inc 156 Cumberland Pkwy, Mechanicsburg 17055 | (717) 796-0840 |
| Steven G Lowry & Assoc 3708 Leyland Dr, Mechanicsburg 17050 | (717) 728-9851 |
| Plant Systems Engineering 507 N York St # 2a, Mechanicsburg 17055 | (717) 795-9122 |