| Business | Phone |
| Filtronic Comtek Inc 31901 Comteck Ln, Salisbury 21804 | (410) 546-7700 |
| Harvard Custom Mfg 600 Glen Ave, Salisbury 21804 | (410) 548-7800 |
| K & L Microwave Inc 2250 Northwood Dr, Salisbury 21801 | (410) 749-2424 |
| Lorch Microwave 1725 N Salisbury Blvd, Salisbury 21801 | (410) 860-5100 |