... activated carbon filter sponge are a good air purification filter material formed by carrying high- ... fog, odour, formaldehyde and so on in the air. Characteristics: 1. Adsorption property: A. benzene adsorptive ... air cleaner, household air-conditioner, central air-conditioning, air freshening machine, smoke exhauster, fan heater, air-conditioning fan, smoking machine, exhaust gas tower and air ...