By using special activated alumina carrier, through special pruduction process, this product has adsorption capacity twice higher than similar products. It has high strength, long lifetime, and is the first-class domestic product. By using the strong oxidability of Potassium Permanganate, it oxygenolysises harmful gases which has reducibility in the air, to reach the purpose of air purification. It has very high removal efficiency to H₂S, SO₂, HCHO, etc.