... ash content 3)Manufacturer.Selling 200000pcs/Mon 1`)About Coconut Shell CTO Carbon Block Filter Itis extruded or sintered ... by quality activated carbon or NSF certified high density COCONUT SHELL activated carbon and harmless adhesive as main materialsm. ... , unpleasant odor, color, spore, and remove microorganisms. The coconut shell activated carbon filter cartridge has a better filtration effect ...