3206 Inorganic or mineral colouring matter, n.e.s., preparations based on inorganic or mineral colouring matter of a kind used for colouring any material or produce colorant preparations (excl. preparations of heading 3207, 3208, 3209, 3210, 3213 and 3215), inorganic products of a kind used as luminophores, whether or not chemically defined

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