6909190030
- Ceramic wares for laboratory, chemical or other technical uses; ceramic troughs, tubs and similar receptacles of a kind used in agriculture; ceramic pots, jars and similar articles of a kind used for the conveyance or packing of goods
- Ceramic wares for laboratory, chemical or other technical uses
- Other
- Supports for catalysts, consisting of porous cordierite or mullite ceramic pieces, of an overall volume of not more than 65 l, having, per cm$2 of the cross-section, not less than one continuous channel which may be open at both ends or stopped at one end