This product adopted imported German nano titanium dioxide photocatalytic materials, use of energy efficient decomposition of indoor formaldehyde, can effectively degrade toxic or harmful gases in the air, kill several kinds of bacteria, fight corrupt deodorant, purify the air. At the same time, the selection of natural plant essential oil, can eliminate peculiar smell, pure and fresh happy person, return to natural air, is a household, office, hotel, public health a must-have in the entertainment places.