| Business | Phone |
| Boston Medical Corp 8221 Snowden River Pkwy, Columbia 21045 | (410) 792-9722 |
| Cylex Inc 8980 Old Annapolis # I, Columbia 21045 | (410) 964-0236 |
| Gtco Calcomp 7125 Riverwood Dr # D, Columbia 21046 | (410) 381-6688 |
| Math Resolutions 5975 Gales Ln, Columbia 21045 | (410) 997-9578 |
| Meridian Medical Technologies 6350 Stevens Forest Rd # 301, Columbia 21046 | (443) 259-7800 |
| New Horizon Diagnostics 9110 Red Branch Rd # 2, Columbia 21045 | (410) 992-9357 |