1.Ituze ryiza kandi rirerire ukoresheje ubuzima.
2.Imiterere iroroshye kandi iroroshye.
3.Kuzigama umwanya kandi byoroshye guhuza na PCB.
1. Guhagarara neza no gukoresha igihe kirekire.
2. Imiterere iroroshye kandi iroroshye.
3. Kuzigama umwanya kandi byoroshye guhuza na PCB.