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  • State of Alaska, Department of Environmental Conservation
  • State of California, Air Resources Board (CARB)
  • State of California, Bureau of Automotive Repair (BAR)
  • State of Georgia, Environmental Protection Division Air Protection Branch
  • State of Idaho, Ada County Air Quality Board
  • State of New Jersey, Department of Environmental Protection
  • State of New Mexico, Environmental Health Department
  • State of Nevada, Department of Motor Vehicles
  • State of North Carolina, Department of Environment and Natural Resources
  • State of Pennsylvania, Department of Transportation Inspection Division
  • State of Texas, Commission on Environmental Quality
  • State of Utah, Davis County Health Department
  • State of Utah, Bear River Health Department
  • Other Cities, Municipalities and Counties in the United States
  • Canadian National Testing Laboratory
  • Republic of China
  • Republic of Fiji
  •  Japan
  • Republic of Korea
  • Mexico, State of Jalisco
  • Mexico, State of Aguas Calientes
  • Mexico, State of Mexico


  • Anzen Motors
  • CarMax
  • Ford Motor Company
  • General Motors
  • Iyasaka, Japan
  • Iyasaka Machinery, Korea
  • Mercedes Benz
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  • Pep Boys
  • Precision Tune
  • Snap-On
  • Sonic Auto Dealers
  • VICOM Ltd. Singapore