Nkhani
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Milandu ya ocheka a PDC m'zaka zaposachedwa
M'zaka zaposachedwa, pakhala kufunikira kwakukulu kwa odula PDC m'mafakitale osiyanasiyana, kuphatikiza mafuta ndi gasi, migodi, ndi zomangamanga.PDC kapena polycrystalline diamondi compact cutters amagwiritsidwa ntchito pobowola ndi kudula zida zolimba.Komabe, pakhala pali milandu ingapo ya odula PDC ...Werengani zambiri
