FOR_THE_GRANULAR_REFRACTORIES_WHAT_IS_THE_MELTING_POINT_OF_CARBON??$

• A. 6800¬¨¬®‚Äö√†√ªF
• B. 6200¬¨¬®‚Äö√†√ªF
• C. 6400¬¨¬®‚Äö√†√ªF
• D. 6500¬¨¬®‚Äö√†√ªF