| Business | Phone |
| Tobacco Industry Testing Lab 9900 Belward Campus Dr, Rockville 20850 | (301) 294-8582 |
| Signature Cigars 1331 Rockville Pike # I, Rockville 20852 | (301) 424-8833 |
| Century Tobacco Co Inc 15710 Crabbs Branch Way, Rockville 20855 | (301) 212-9101 |