Onye ahịa a bụ onye na-azụrụ ngwaahịa tungsten carbide anyị n'ime afọ ise gara aga.

Mgbe ịnwale ugboro abụọ nke ngwaahịa carbide tungsten anyị. N'oge okpomọkụ ikpeazụ, ha nyere iwu nnukwu ego.

Ha bịara lelee ngwaahịa ha tupu ebupu ha.

Ihe niile juru ha afọ.

N'ọnwa Febụwarị a, ha nyere anyị nnukwu iwu ọzọ.