Exhaust aftertreatment systems which were tested concerning their application specifics and evaluated according to criteria from a broad practical experience in manufacture and application are labelled with the FAD quality seal. This facilitates the selection of suitable system solutions for the manufacturer and the user.

FAD-QS serves the evaluation of exhaust aftertreatment systems for diesel engines of most different application categories, predominantly in the retrofit sector.

Further information you find in the following document:
„Regulations for testing components and systems for exhaust aftertreatment (EGA) of diesel engine exhaust gases for obtaining the FAD quality seal (FAD-QS). Part I: General provisions"