690320900000
HS 690320900000 - Other refractory ceramics (such as kilns, pot furnaces, capsules, stoppers, supports, casting pots); alumina, silica, or mixtures >50%, alumina >=45%
Other refractory ceramics (such as kilns, pot furnaces, capsules, stoppers, supports, casting pots); alumina, silica, or mixtures >50%, alumina >=45%
gtip