Itegereze imbaraga n'ubushobozi bidasanzwe by'ukuboko kw'urutare rwa Kaiyuan kwashyizwe kuri Cat 390 Excavator.
Rock Arm of Excavator, nk'igikoresho cyahinduwe gifite intego nyinshi, kibereye gucukura nta guturitsa, nko mu birombe by'amakara bifunguye, mu birombe bya aluminiyumu, mu birombe bya fosfeti, mu micanga, mu birombe bya zahabu, mu birombe bya quartz, nibindi. Kibereye kandi gucukura amabuye aboneka mu bwubatsi bw'ibanze nko mu kubaka imihanda no mu gucukura munsi y'ubutaka, nk'ibumba rikomeye, mu rutare rwangiritse, mu migozi, mu mabuye y'agaciro, mu tubuye tw'amabuye y'agaciro, mu mabuye y'umucanga, nibindi. Gifite ingaruka nziza, gifite imbaraga nyinshi mu bikoresho, gifite igipimo gito cyo gutsindwa, gifite ingufu nyinshi ugereranije n'inyundo zivunagurika, kandi gifite urusaku ruto. Rock Arm ni yo mahitamo ya mbere ku bikoresho bidafite uburyo bwo guturitsa.



