For use in machinery for making pulp of fibrous cellulosic material or for making or finishing paper or paperboard

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: > Articles having a hardness equivalent to 9 or more on the Mohs scale > For use in machinery for making pulp of fibrous cellulosic material or for making or finishing paper or paperboard > For use in machinery for making pulp of fibrous cellulosic material or for making or finishing paper or paperboard