| Business | Phone |
| Harrington Welding 111 Grant St, Harrington 19952 | (302) 398-9792 |
| K L Vincent Welding Svc 19456 S Dupont Hwy, Harrington 19952 | (302) 398-9357 |
| Knotts Welding & Equip Repair 16869 S Dupont Hwy, Harrington 19952 | (302) 398-3400 |
| Miller Metal Fabrication 6467 Milford Harrington Hwy, Harrington 19952 | (302) 398-4960 |