Cobalt hlau (CO)
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Cobalt Hlau Hmoov (Co)
Lub zog lub cev lub hom phiaj, tej daim, & hmoov tshuaj khoom siv 99.8% rau superalloys, thiab tau pom ntau dua hauv qee cov ntawv thov tshiab, xws li hauv cov roj teeb tshiab ...Nyeem ntxiv