1.Material:PP,PET 2.Feature:purify air well ,with small volume,portable 3.Certificate:CE,CB,RoHS Features:Adopt high speed ... remove dust ,pollen,micro particles in the airDecomposition: rapid decomposition air formaldehyde, benzene, ammonia, radon and the harmful gas of ... and so on.*Good After Sale Service: Shipment and sample quality tracking includes lifetime, switch-on/off times and maintenance. ...