The CTO filter element is made by mixing granular activated carbon powder material and inorganic liquid binder, pouring into a special mold, using a press for high-pressure compression molding, and drying after the mold is removed.

In the water purifier, the CTO filter element can deeply adsorb different colors, odors, and residual chlorine in the water, and filter out fine impurities. It is used in the third stage of water purifier, and can also play a role in protecting the RO membrane, and the service life is generally 3-6 months.

The coal-based activated carbon CTO filter element uses coal-based carbon with iodine of more than 900 as the filter material, which is processed by three times of desulfurization of iron or high-quality vegetable carbon.

The CTO filter cartridge can replace calcium and magnesium ions in the water, soften the tap water quality, and make the boiling water free of scale. It is suitable for water softening in areas with harder water quality in the north. Theoretically, the resin can be reused countless times after being soaked in salt water, but in practice, it is gradually wrapped in dirt during use, and the regeneration effect will become worse and worse. The service life is related to the amount of water used and the quality of the water in each place. Users can freely choose combinations.