Thaum yuav cov khoom siv mining, cov hauv qab no yuav tsum tau xav txog:
(1) Kev Xaiv Cov Khoom Siv: Xaiv cov khoom tsim nyog raws li kev ua haujlwm tshwj xeeb, xws li siab -manganese steel rau cov ntawv thov uas cuam tshuam hnyav.
(2) Dimensional Accuracy: Xyuas kom meej tias qhov ntev ntawm cov khoom tshiab zoo kawg nkaus phim cov khoom qub.
(3) Cov txheej txheem kho cua sov: Siab- cov khoom zoo tau txais kev kho cua sov kom zoo, ua rau muaj kev hnav zoo dua thiab tawv.
(4) Kev Tsim Nyog Tsim Nyog: Xaiv cov tuam txhab tsim khoom tsim nyog kom ntseeg tau cov khoom lag luam zoo.
