… 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 …
Explanatory notes
… chemical or other technical uses; ceramic troughs, tubs and similar receptacles of a kind used in agriculture; … supports for filters and catalysts; filter plates, tubes, candles, cones, funnels, etc.; water-baths; beakers, … requiring close dimensional tolerances (e.g., engine turbocharger rotors, rolling contact bearings and machine …