NAICS 541990 and PSC AD91 contractors in Maryland

All Other Professional, Scientific, and Technical Services. R&D- DEFENSE OTHER: OTHER (BASIC RESEARCH). Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Maryland.

Maryland · NAICS 541990 · PSC AD91

Last updated: April 6, 2026

Visible recipients

Mapped obligations

$146,290

Buyer overlap

Top recipients

Visible recipients in the Maryland overlap of NAICS 541990 and PSC AD91

Eccalon, LLC

Hanover, MD

Eccalon, LLC is a federal black american owned business profile based in Hanover, MD. The current public data layer shows $14,777,671 in visible federal obligations across 16 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 334290 (Other Communications Equipment Manufacturing). The profile also shows meaningful product and service activity in PSC R408.

$146,290