Gulu lalikulu la Ninestones ndiloyamba kuchita nawo kafukufuku ndi chitukuko cha Dome Insert ku China, kutsogolera patsogolo pa mayiko.

Ku China, gulu lalikulu la Wuhan Ninestones linali loyamba kupanga PDC DOME INSERT, ndipo ukadaulo wake wakhala ukutsogolera padziko lonse lapansi.Mano a PDC DOME amapangidwa ndi zigawo zingapo za diamondi ndi zigawo zosinthira, zomwe zimapereka kukana kwamphamvu kwambiri ndipo ndizoyenera kugwiritsidwa ntchito popanga abrasive.Akuti moyo wa mano a PDC DOME ndi nthawi 5-10 kuposa mano achikhalidwe a carbide, omwe amachepetsa kwambiri ndalama zoboola ndikubweretsa kusintha kwamakampani opanga mafuta.

Mano a PDC DOME sali oyenera kutetezedwa m'mimba mwake komanso kuyamwa modabwitsa kwa ma roller cone kubowola, ting'onoting'ono tobowola pansi, ndi ma PDC kubowola, komanso akopa chidwi kwambiri pamsika wapadziko lonse lapansi.Zida za mano za PDC DOME za Wuhan Ninestones core timu zadziwika kwambiri ndi ogwiritsa ntchito apakhomo ndi akunja chifukwa cha magwiridwe antchito awo abwino kwambiri, mtundu wokhazikika, ntchito yabwino yamsika, komanso ukadaulo wa R&D mosalekeza.