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Dec 01, 20163M kev taw qhia txog ob mog daim kab xev Super ciav daim kab xevSua lus: 3M ob mog nplaum khov super daim kab xev uas tau mus cuag tus swm cev -
Dec 01, 2016Vim li cas thiaj ua kev laus daim kab xev yuav zam tau yooj yim1, pa, vim yog qhov nyiaj uas muaj nyob hauv cov pa 21%, uas cov khoom khoom ntawm oxide kom cov pa
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Dec 01, 2016Siv hluav taws xob daim kab xevKev loj hlob ntawm fais thiab hwj huam load yog ua. Cov neeg tseem ceeb toom rau cov hwj huam kab ntaub hlais qhov loj txog hluav taws xob kev ruaj ntseg uas siv tau cov nyhuv
