The Baustoffüberwachungs- und Zertifizierungsverband Nordrhein-Westfalen (BÜV NW) e. V. is a certification body accredited under certificate D-ZE-18141-01-00, compliant with DIN EN ISO/IEC 17065:2013 for conformity assessment activities. It meets additional legal and normative requirements, including those specified in sectoral programs. BÜV NW specializes in certifying factory production control in accordance with EU Regulation 305/2011 for construction products, covering technical specifications for masonry, mortar, aggregates, and other materials, in alignment with the Construction Products Regulation. The organization is also authorized to implement new revisions of harmonized technical specifications without prior approval from the German Accreditation Body.