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Lub Zog Hluav Taws Xob Kaw Lus
Rp Graphite hluav taws xob yog cov khoom siv dav dav uas muab cov txiaj ntsig tseem ceeb rau kev lag luam steel. Kev tiv thaiv qis tsis ua rau kom muaj zog siv hluav taws xob tsawg thaum lub sijhawm smelting. Cov yam ntxwv no pab txo cov nqi thiab txhim kho kev ua tau zoo, ua nws cov khoom lag luam zoo.
