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    Corporate Offices
    504 N. 4th Street
    Fairfield, IA 52556

    Phone Numbers
    Certification Services: 641-209-1899
    HorizonScan Services: 641-209-9035
    Non-GMO Project Verification Services: 641-469-6181 option 2
    Testing Services: 641-472-9979
    United States Hemp Authority Services: 641-209-4623