Iyi nini nini （igura hafi miliyoni 3 CNY ≈430.000 US DOLLAR US） yitwa igitutu kigabanuka no gucana itanura.

Kugirango hamenyekane ubukana bwibicuruzwa bya karubide ya tungsten no kwirinda gukata amenyo no gukata, ibishishwa byumye kandi byacuzwe bigomba gukenera igitutu kunshuro ya kabiri. Muri ubu buryo, imbaraga zivanze zirashobora kwiyongera hejuru ya 30%. Gukomera cyane bitanga imbaraga zo hejuru. Mubisanzwe, ubu buryo bubiri bwo gucumura bufata iminsi igera kuri 7, ariko ibi bikoresho bishya byashyizwe mubikorwa uyumunsi, birashobora guhindura inzira zombi zabanje gukurikiranwa muburyo bukurikira, aribwo gutesha agaciro no gucumura no gucumura igitutu, kugirango bikorwe icyarimwe. Ibi ntabwo byemeza ubwiza bwa karbide gusa ahubwo binagabanya cyane umusaruro. Nyuma yuko ibikoresho bishya bimaze gukoreshwa, igihe cyose cyibikorwa gishobora gutezwa imbere byibura iminsi 5.