| Business | Phone |
| Acorn Engineering 186 E Springettsbury Ave, York 17403 | (717) 854-9343 |
| Century Engineering Inc 18 S George St # 605, York 17401 | (717) 812-8407 |
| Mid Atlantic Region Engr 2453 Kingston Ct, York 17402 | (717) 755-9445 |
| Hne Engineering Inc 2570 Lori Dr, York 17404 | (717) 764-3235 |