Explanatory notes
… more highly processed (e.g., sawn or cut otherwise than rectangular (including square), ground, polished, chamfered, … for buildings, for chemical installations, etc.); troughs, reservoirs, basins, sinks; guttering stones; mantelpieces. … Slate pencils ( heading 96.09 ), writing or drawing slates, ready for use, and boards, framed or not ( heading 96.10 ). …