Three-stage filtration: Sintered activated carbon is used as the filter element material (CTO) (some manufacturers use PP cotton as the filter element material), which deeply absorbs the color, odor, and residual chlorine in the water, and filters out fine impurities. It is used for the third stage in the water purifier, and also plays the role of protecting the main filter element of the water purifier, and the service life is generally 3-6 months.
