Cov chaw thov: nqa, hloov chaw, thau khoom thiab thau cov khoom hnyav, roj tank flip-chip vuam, xws li kev teeb tsa thiab kev txav ntawm ntau yam loj thiab nruab nrab ua vaj tse, hlau ua haujlwm thiab cov cuab yeej siv, tsim nyog rau kev siv pej xeem engineering thiab choj siv ntawm cov tuam txhab tsim kho thiab teeb tsa, cov chaw tsim khoom thiab cov mines, Cov cuab yeej siv rau kev tsim kho vaj tse xws li hluav taws xob, nkoj tsim, tsheb tsim, kev tsim kho, txoj kev, txuas hniav, metallurgy, mines, thaj chaw me me, thiab kev tiv thaiv zoo thiab kev tiv thaiv.
