Carbon for filters; ceramic materials in particulate form, for use as filtering media; cellulose esters for industrial purposes; gas purifying preparations; disincrustants; filtering materials of vegetable substances; filtering materials of mineral substances; filtering materials of chemical substances; filtering materials of unprocessed plastics; clarification preparations

Wood pulp paper; paper made from cotton fiber and wool fiber for calender roll use; filter paper; toilet paper; grainy paper; filter cardboard; filtering materials of cardboard; waterproof cardboard; magazines [periodicals]; filtering materials of paper