Activated carbons for environmental protection industry; Aluminium silicate; Chemical adsorbents for removing impurities from fuel; Chemical getters; Chemicals for absorbing oil; Chemicals for treating hazardous waste; Chemicals for use in decontamination of polluted sites; Grease-removing preparations for use in manufacturing processes; Mineral substances in the nature of filtering materials in environmental protection industry; Oil-purifying chemicals; Oil-separating chemicals; Water-purify...