Imashini isya ibishyimbo irashobora gukuraho umukungugu wose wubutaka bwubwoko bwose bwibishyimbo nkibishyimbo bya mung, ibishyimbo bya soya, nibishyimbo byimpyiko.
Bitewe no kwegeranya ibishyimbo mumurima, burigihe habaho umukungugu hejuru yibishyimbo, bityo rero dukeneye polishinge kugirango dukureho umukungugu wose hejuru yibishyimbo, kugirango ibishyimbo bigire isuku kandi byoroshye, kugirango bishobore kuzamura agaciro ka ibishyimbo, Kubimashini yacu yo gusya ibishyimbo hamwe nogusya impyiko, hari inyungu nini kumashini yacu yo gusya, Nkuko twabimenye mugihe imashini isya ikora, burigihe harigihe hari ibishyimbo byiza bizavunika na polish, bityo Igishushanyo cyacu nukugabanya kugabanya ibiciro byacitse iyo imashini ikora, Ibiciro byacitse ntibishobora kurenga 0.05%.