Air Purifier Model AT8U457_NWE ECARF-Certification valid Certified on 07.06.2024 / Certificate number 7863 WINIX Inc. 344 Haogae-ro, Bundang-gu, Seongnam-si, Geonggi-do 463-440 Korea Tel. +82-31-701-1173 Fax. +82-31-701-5051 winix@ewinix.co.kr Learn more about the test criteria of this product.