| Business | Phone |
| Atlantic Computer Products Inc 6802 Industrial Dr # 206, Beltsville 20705 | (301) 595-9700 |
| Computech Integration & Trade 10979 Baltimore Ave, Beltsville 20705 | (301) 572-8088 |
| Computerwarehouse/Pcretro.Com 5031 Garrett Ave, Beltsville 20705 | (301) 931-6630 |
| Fastech Inc 11890 Old Baltimore Pike # Pq, Beltsville 20705 | (301) 931-2001 |