| Business | Phone |
| Clarke & Ebron Janitorial 3607 W Rogers Ave, Baltimore 21215 | (410) 542-7194 |
| Hamilton Vacuum 5500 Harford Rd, Baltimore 21214 | (410) 254-2323 |
| Holt Paper & Chemical Co Inc 1381 Western Ave, Baltimore 21230 | (410) 837-4658 |
| Modern Supply Co 1933 W Baltimore St, Baltimore 21223 | (410) 233-6447 |
| Odorite Of Baltimore Inc 1111 Maryland Ave, Baltimore 21201 | (410) 727-1565 |
| Porters Supply Co Inc 1100 Whistler Ave, Baltimore 21223 | (410) 525-9100 |
| United Sanitary 1901 N Howard St, Baltimore 21218 | (410) 837-4040 |
| W W Contractors 31 Hopkins Plz, Baltimore 21201 | (410) 347-0386 |
| Superior Supply Ltd 4001 Washington Blvd, Baltimore 21227 | (410) 242-0060 |