Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2
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6902.90
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Refractory bricks, blocks, tiles and similar refractory ceramic constructional g can be reviewed from 6902.90, but the final code depends on full product details, material, use, and destination tariff rules.
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6902.10
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2o3
6902.20
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight more than 50% of alumina (Al2o3), of silica (SiO2) or of a mixture or compound of these
6901.00
Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (e.g. kieselguhr, tripolite or diatomite) or of similar siliceous earths
6903.10
Refractory ceramic goods; containing, by weight, more than 50% of free carbon, excluding those of siliceous fossil meals or similar earths