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Chemical oxidants for use in the manufacture of printed circuits

Fuels for use as a fuel cell element

Crucible materials for melting or refining metal or silicon, namely, crucibles of common metal and their alloys

Electric parts, namely, motor brushes

Graphite electrodes for refinement or machining such as graphite electrodes for steel making or graphite electrodes for electric discharge machining; fuel cells; laboratory equipment, namely, crucibles for melting or refining metal or silicon

Heating elements used for sintering ceramics, refinement or heat treatment of semiconductor parts; heat exchangers for chemical plants for which chemical resistance is required; metal reclaimer, namely, a foundry crucible for reclaiming metal from dross during processing