Product Description The GAC/UDF Filter Cartridge uses NSF/Coconutshell/Coal granular activated carbon, good at removing odor, color and chlorine. The activated carbon used has been processed by acid-washing and wind-selection and the end caps are fixed with special PP layer instead of general non-woven cloth. So no carbon fines coming out. At the same time,it keeps a high flow. We use auto-filling machines, not labors, to fill the granular activated carbon filters. The weight tolerance is small and have higher efficiency.
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