Additional filter space - Hypnotico Product description: Internal replacement filter removes hazardous asbestos particles. Works with cold catalyst technology and activated carbon, replaced or changed every six months, considering ventilation once a month and exposing it to sunlight. Preserve safety and protect the environment. The main components of the cold catalyst are food and pharmaceutical additives, meaning they are non-toxic, non-corrosive, and non-flammable. It contains a cooling stimulant, a natural catalyst, works under normal living conditions, and stimulation can be used to control pollution.