**Effect** 1.Decrease in formaldehyde and various environmental toxic substance 2.Decrease in cortisol, the stress hormone 3.Antibiotic fiber-sterilization, deodorization, houst dust mite control 4.Strong antibiosis and antifungal ln living roomand bath room 5.Influence on learning ability . **Feature 1. Original korea phytoncide Using phytoncide of chamaecyparis obtusa tree(hinoki tree) having most active ingredient among the trees 2. Pure natural substance 3. Excellent technology "obtain related patent : patent no.0548501, patent no.517955 etc Testified in korea research institute, fiti testing & research institute, korea etc 4. Convenience _the function of remote control-3steps control:forest mode, sleeping mode, bright of liquid crystal _100/220v electric power _simply can change the refill liquid. *Dimensions:255mm(w)*270mm(d)*255mm(h) *Weight :2.6kg(not included refill oil) *Color :red *Mode :super sonic waves *Electric power:ac100~220v / 50~60hz / 24w.