High Quality Recarburizer Graphite Granules / Hmoov

Lus piav qhia luv luv:

Daim ntawv thov: tsuas yog siv nyob rau hauv metallurgy kev lag luam raws li recarburizer, reducer, foundry modifier, fireproof khoom. Refractory, Cam khwb cia hlau foundry.