Gulu lalikulu la Ninestones ndi loyamba kuchita kafukufuku ndi chitukuko cha Dome Insert ku China, kutsogolera patsogolo padziko lonse lapansi.

Ku China, gulu lalikulu la Wuhan Ninestones linali loyamba kupanga PDC DOME INSERT, ndipo ukadaulo wake wakhala ukupitilirabe kukhala patsogolo padziko lonse lapansi kwa nthawi yayitali. Mano a PDC DOME amapangidwa ndi zigawo zingapo za diamondi ndi zigawo zosinthira, zomwe zimapangitsa kuti zikhale zolimba kwambiri ndipo ndizoyenera kugwiritsidwa ntchito popanga mapangidwe okhwima. Zanenedwa kuti nthawi ya moyo wa mano a PDC DOME ndi nthawi 5-10 kuposa mano achikhalidwe a carbide, zomwe zimachepetsa kwambiri ndalama zobowola ndikubweretsa kusintha kwakukulu kumakampani obowola mafuta.

Mano a PDC DOME si oyenera kokha kuteteza kukula kwa ma roller cone drill bits, ma downhole drill bits, ndi ma PDC drill bits, komanso akopa chidwi chachikulu pamsika wapadziko lonse lapansi. Zogulitsa za mano a PDC DOME za gulu la Wuhan NInestones core zadziwika kwambiri ndi ogwiritsa ntchito akunyumba ndi akunja chifukwa cha magwiridwe antchito awo abwino, khalidwe lokhazikika, ntchito yabwino pamsika, komanso luso lopitiliza kufufuza ndi kupanga zatsopano.