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Continue to ChatHi, I found this on aviationbusinessnews.com, and thought you might be interested - ST Engineering receives AML-STC for the installation of Aviation Clean Air’s Proactive Air Purification Solution - https://www.aviationbusinessnews.com/cabin/st-engineering-receives-aml-stc-for-the-installation-of-aviation-clean-airs-proactive-air-purification-solution