The product is made of high-quality nut shell as raw material with new production process and is widely used in purification and sterilization equipment such as purifiers and mineral water equipment. Its water purification effect is higher than that of ordinary water purifier charcoal. With the bactericidal properties of free silver ions, it plays the role of bactericidal and antimicrobial. It can remove peculiar smell, abnormal odor and trace amounts of toxic and hazardous substances from water and make the purified water drinkable.