| Business | Phone |
| Greenmount Precision Mach Inc 2025 Hanover Pike, Hampstead 21074 | (410) 374-9013 |
| Maple Grove Machining 4700 Maple Grove Rd # B, Hampstead 21074 | (410) 239-0909 |
| Ridge Engineering Inc 3987 Hampstead Mexico Rd, Hampstead 21074 | (410) 239-7716 |
| Western Industrial Machining 137 Hanover Pike, Hampstead 21074 | (410) 239-3820 |