... motor 3.negetivie ion generator 4.import from Taiwan Activated carbon and HEPA high efficiency air purifier Specification:Model: AC ... international approved quality2,Years of motor product experience, exported to Europe, America, Japan, Korea,etc., durable and super silent.3 ... 99.97% dust, smoke,pollen, allergen etc.4,Activated carbon filter : can remove odours and harmful gases efficiency 5,3 ...