It was established and administrated according to ISO/IEC17025:2005 standard. We took part in the amendment of new national standard GB/T18801-2015 for air purifier, cooperated with Tsinghua University to set up test room for air purifier, set up PM CADR test room according to American AHAM standard of AC-1. To ensure the accuracy of testing data, the R&D lab have advanced performance testing devices.