| Business | Phone |
| Cross & Affiliates Inc 107 E Furnace Branch Rd, Glen Burnie 21060 | (410) 760-6005 |
| Gent Mechanical Inc 311 Central Ave, Glen Burnie 21061 | (410) 768-8918 |
| Southern Mechanical Inc 7730 Baltimore Annapolis Blvd, Glen Burnie 21060 | (410) 553-9166 |
| Tenco 175 Penrod Ct # G, Glen Burnie 21061 | (410) 590-6174 |