... , Nano Ion, Vitamin, Cold Catalyst, Ionizer. 2. air come from front side Actived Carbon Air Purifier with Nano ion &HEPAmodel no: B381. Pre-filter ... , HEPA, Carbon Active, Nano silver, Vitamin, Cold Catalyst, Ionizer ... :8.30kgs8. Container loading:450pcs/20" 1000pcs/40"HQ Active Carbon Air Purifier