activated carbon and HEPA air purifier 1.Model: AC-2061 ... 3.negetivie ion generator 4.import from Taiwan Activated carbon and HEPA high efficiency air purifier Specification:Model: AC ... 99.97% dust, smoke,pollen, allergen etc.4,Activated carbon filter : can remove odours and harmful gases efficiency 5,3 ... 8.Noise:50/56/63db9,Negative ion function activated carbon and HEPA high efficiency air purifier