PFS is actively engaged in the following work areas under the North American Industry Classification System:

511199 | All Other Publishers

518210 | Data Processing, Hosting and Related Services

519130 | Internet Publishing and Broadcasting and Web Search Portals

519190 | All Other Information Services

541330 | Engineering Services

541511 | Custom Computer Programming Services

541512 | Computer Systems Design Services

541513 | Computer Facilities management services

541519 | Other Computer Related Services

541611 | Administrative Management Consulting Services

541612 | Human Resources Consulting Services

541613 | Marketing Consulting Services

541614 | Process and Logistics Consulting services

541618 | Other Management Consulting Services

541690 | Other Technical Consulting Services

541715 | Research and Development in the Physical, Engineering, and Life Sciences
(except Nanotechnology and Biotechnology)

541720 | Research and Development in the Social Sciences and Humanities

541990 | All Other Professional, Scientific, and Technical Services

561499 | All Other Business Support Services

561990 | All Other Support Services

611430 | Professional and Management Development Training

611699 | All Other Miscellaneous Schools and Instruction

611710 | Educational Support Services

624120 | Services for the Elderly and Persons with Disabilities

624190 | Other Individual and Family Services

624229 | Other Community Housing Services

624310 | Vocational Rehabilitation Services