HS 690220 · CONSTRUCTION MATERIALS

High-alumina and silica refractory bricks in East Africa

Refractory bricks and blocks rich in alumina or silica for kilns and furnaces; bought by cement, steel and glass plants.

Customs description: 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