Air Purifier AP25 ECARF-Certification valid Certified on 19.03.2020 / Certificate number 6693 Krug & Priester GmbH & Co. KG Simon-Schweitzer-Straße 34 D 72336 Balingen (Germany) Tel: +49 (0) 7433-269-0 Fax: +49 (0) 7433-269-200 Learn more about the test criteria of this product.