Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths
Ceramic goods; (e.g. retorts, crucibles, muffles, nozzles, plugs, supports cupels, tubes, pipes, sheaths, rods and slide gates) excluding those of siliceous fossil meals or of similar siliceous earths
Ceramic ware for laboratory, chemical, other technical uses; ceramic troughs, tubs, similar receptacles used in agriculture; ceramic pots, jars and similar used in the conveyance or packing of goods