Free filling: The filter is equipped with two-section filter filling compartments, which can be loaded with two different filter materials 304 stainless steel filter screen: 40 filter, and rust-free, can be used for a long for time High-precision filtration: The filtration accuracy is up to 40 microns, which effectively traps macromolecular impurities and can be cleaned repeatedly Function: Applied to filter water treatment, can purify water, protect water purifier, and increase the life of household equipment : This filter screen can be used with a 10-inch filter bottle The filter screen can contain filter materials with a particle diameter greater than 4MM, which is suitable for most 10-inch filter bottles