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[ Technical ceramic compositions for the manufacture of refractory materials ]

Furnaces, namely, furnaces, industrial furnaces, furnaces for the chemical and glass-making industries, furnaces for the steel industry, shaped linings for ovens and furnaces

Refractory linings for use in oven and furnace construction, namely, inner refractory furnace linings not of metal; refractory materials in the nature of non-metallic building materials, namely, refractory blocks, not of metal; refractory bricks not of metal; refractory mortars; refractory shapes not of metal, refractory construction materials not of metal; refractory concretes

[ Construction and repair of ovens and furnaces; installation of ovens and furnaces, maintenance thereof ]