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CLASS OF GOODS (HS 2017)
690220
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
Baddeleyite-corundum refractories
DESCRIPTION
Used in the construction of all types of glass melting furnaces