... the induction of air purifier and grade to adjust air purification speed5,UV,Photocatalyst TiO2,Negative lons,Action carbon ,Hepa filtration core6 ... 50M28,filtration efficiency:99.97%Functions:1,Improve the quality of environment,remove the bacilus and other injurants.2 ... looking matches to the funituresCompetitive Advantages: 1,Well and High Quality Control ,2,Prompt Delivery ,3,New Product ,4, ...