Explanatory notes
… of slate or of agglomerated slate. Natural slate falls in heading 25.14 when in the mass, or in the form of blocks, … rough cutting or squaring or squaring by sawing. This heading covers similar products more highly processed (e.g., … Slate pencils ( heading 96.09 ), writing or drawing slates, ready for use, and boards, framed or not ( heading 96.10 ). …