Absorbing carbons for Household water purifier; Activated carbons for Household water purifier; Ceramic particles for use as a filtering media in Household water purifier; Chemical preparations in the nature of filtering materials in Household water purifier; Chemical preparations in the nature of ion-exchange resins; Chemical stone sealers that penetrate the stone to provide sealing protection; Complex salts; Mineral substances in the nature of filtering materials in Household water purifier...