YG20 ni ubwoko bwa karbide ya sima, cyane cyane karbide ya tungsten.Ntabwo ikorerwa ubushyuhe, ifite imbere imbere ninyuma, kandi irakwiriye kubyara umusaruro.YG20 irakwiriye gukora kashe ya kashe, nka kashe yerekana ibice, ibikoresho byumuziki impapuro zimpapuro, nibindi., ...
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