| Business | Phone |
| Cardinal Merchant Svc Columbia 21044 | (301) 596-2221 |
| Cultureshock Enterprises Inc 5021 Hayload Ct, Columbia 21044 | (410) 964-3786 |
| Eastern Exhibit Prod & Svc Inc 9200 Rumsey Rd, Columbia 21045 | (301) 854-3377 |
| Ikon Technology Svc 10420 Little Patuxent Pkwy, Columbia 21044 | (410) 715-5100 |
| Jet Messenger Svc Inc 9009 Mendenhall Ct # G, Columbia 21045 | (410) 309-2772 |
| Physicians Insurance Svc 1707 L St Nw, Columbia 21046 | (202) 466-1888 |