Enwere ọtụtụ ụdị carburizers, gụnyere coal, graphite eke, graphite artificial, coke na ihe ndị ọzọ carbonaceous. Ngosipụta anụ ahụ maka nyocha na ịtụ carburizers bụ ebe mgbaze, ọsọ agbaze na ebe mgbanye ọkụ. Isi ihe na-egosi kemịkalụ bụ Carb...
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