| Business | Phone |
| Green Ray Industries 840 W Church Rd, Mechanicsburg 17055 | (717) 766-0223 |
| Hagemeyer North America 6428 Carlisle Pike, Mechanicsburg 17050 | (717) 766-3287 |
| Tyco Electronics Inc 1311 S Market St, Mechanicsburg 17055 | (717) 795-5702 |
| Square D 201 Cumberland Pkwy, Mechanicsburg 17055 | (717) 697-8000 |
| Samtec Inc 4909 Louise Dr # 107, Mechanicsburg 17055 | (717) 697-9585 |