NUG

Cov khoom siv tungsten feem ntau yog siv los nrhiav cov khoom siv, cutter thiab taub hau, tungsten hlau rau cov cuab yeej siv hluav taws xob thiab cov neeg xyuas pib ntawm cov cua sov, crankshaft thiab lub tog raj kheej chim ntawm cov tsheb siab heev, cov khoom siv ntawm cov hlau tsis muaj cua sov, feem ntau yog siv rau satellite, dav hlau thiab nkoj. .

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