6909190060 - Supports for catalysts, consisting of porous ceramic pieces, of a blend of silicon carbide and silicon, with a hardness of less than 9|on the Mohs scale, with a total volume of not more than 65|litres, having, per cm$2|of the surface of the cross section one or more closed channels at the tail end Harmonized System Codes, Taric Code, HS Code, HTS Code, Harmonized Commodity Description, Commodity Codes, Classification of goods, Tariff Nomenclature, Customs Tariff Number, Tariff Classification.