Sisitemu ya Polisher Ibiranga: 1. Igikorwa kiroroshye kandi cyoroshye kwiga, ntamuhanga wogutegura gahunda wumwuga asabwa 2. Abashinzwe tekinike basanzwe barashobora gukora, bakazigama amafaranga yumurimo wa ba shebuja babigize umwuga 3. Kugenzura imashini zikoresha imashini, ikoranabuhanga ntirizaba mumaboko ya shobuja, byoroshye kuri ...
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