CSS North American Industry Classification System (NAICS) Categories

NAICS CodeTitleSmall Business
541714Research and Development in Biotechnology
541715Research and Development in the Physical, Engineering, and Life Sciences
562910Environmental Remediation Services
561210Facilities Support Services
541990All Other Professional, Scientific, and Technical Services 
541330Engineering Services 
541380Testing Laboratories 
541611Administrative Management and General Management Consulting Services 
541618Other Management Consulting Services 
541619Other Scientific and Technical Consulting Services 
541620Environmental Consulting Services 
541690Other Scientific and Technical Consulting Services 
488490Other Support Activities for Road Transportation 
488999All Other Support Activities for Transportation