NAICS 327125 — Clay Building Material and Refractories Manufacturing 
BEA sector: Clay product and refractory manufacturing
Activity: Alumina fused refractories manufacturing
Activity: Aluminous refractory cement manufacturing
Activity: Bauxite brick manufacturing
Activity: Bricks, nonclay refractory, manufacturing
Activity: Carbon brick manufacturing
Activity: Castable refractories, nonclay, manufacturing
Activity: Crucibles, graphite, magnesite, chrome, silica, or other nonclay materials, manufacturing
Activity: Magnesia refractory cement manufacturing
Activity: Mortar, nonclay refractory, manufacturing
Activity: Nonclay refractories (e.g., block, brick, mortar, tile) manufacturing
Activity: Refractories (e.g., block, brick, mortar, tile), nonclay, manufacturing
Activity: Refractory cement, nonclay, manufacturing