Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, n.e.s.
Tariff Classification
section 13
Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware
chapter 69
Ceramic products
69.02
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: