… Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide … those of siliceous fossil meals or of similar siliceous earths. …
Explanatory notes
… 69.03 - Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide … those of siliceous fossil meals or of similar siliceous earths (+). 6903.10 - Containing by weight more than 50 % of …