| Business | Phone |
| O T Taylor Heating & Air Cond 11495 Montgomery Rd, Beltsville 20705 | (301) 937-7861 |
| Chesapeake Systems Inc 11900 Baltimore Ave # H, Beltsville 20705 | (301) 419-7411 |
| Coastline Distributors 6820 Distribution Dr, Beltsville 20705 | (301) 937-2055 |