PERFORM

catalysts for use in the manufacture of industrial chemicals; chemical absorbents for the treatment of gases and liquids for the purpose of purification by removal of impurities; chemical absorbents for the removal of impurities from chemical process fluids; chemical absorbents for the removal of halogens, halides, metals, metal compounds, sulphur and/or sulphur compounds from hydrocarbons; chemical absorbents for the treatment of chemical process fluids in petroleum refineries or chemical refineries; all of the above excluding bleached clay and excluding the processing, purification, or treatment of animal and vegetable oils and tallow