POOL 4  500 Employees Business Size Standard

NAICS CODE

NAICS TITLE

541711

Research and Development in Biotechnology

541712

Research and Development in the Physical, Engineering,
and Life Sciences (except Biotechnology)

POOL 5A  1,000 Employees Business Size Standard

NAICS CODE

NAICS TITLE

541712
Exception B

Research and Development in Aircraft Parts, and Auxiliary Equipment,
and Aircraft Engine Parts

POOL 5B 1,000 Employees Business Size Standard

NAICS CODE

NAICS TITLE

541712
Exception C

Research and Development in Space Vehicles and Guided Missiles, their Propulsion Units, their Propulsion Units Parts, and their Auxiliary Equipment and Parts