Intertek – Grand Rapids Broadmoor Avenue Southeast, Grand Rapids, Kent County, Michigan, United States Member since July 15, 2024
West Texas Analytical Laboratory, LLC North Price Road, Pampa, Gray County, Texas, United States Member since May 24, 2024
Advanced Terra Testing Parfet Street, Lakewood, Jefferson County, Colorado, United States Member since May 27, 2024
Greening Testing Laboratories, Inc. Mount Elliott Street, Detroit, Wayne County, Michigan, United States Member since May 31, 2024