Explanatory notes
… colours, whether or not calcined or mixed together (see Explanatory Note to heading 25.30 ). (b) Separate chemically … brightened, generally fall in heading 25.30 - see relative Explanatory Note.) (9) Soluble Vandyke brown and similar … the colours or pigments for the ceramic industries (see the Explanatory Note to heading 32.07), the colours, paints, …