| Business | Phone |
| Brandes Associates Inc 22326 Exploration Dr, Lexington Park 20653 | (301) 866-0956 |
| Holmes Tucker Intl Inc 21789 N Coral Dr # 2a, Lexington Park 20653 | (301) 866-1701 |
| Metric Systems Corp 21795 N Shangri La Dr # C, Lexington Park 20653 | (301) 866-0888 |