Imashini zitanga amashanyarazi ya mazutu, nk'ubwoko busanzwe bw'ibikoresho by'ingufu zikoreshwa mu buryo busanzwe, zikoreshwa cyane ahantu hatandukanye nko mu nganda, mu bitaro, mu maduka, n'ahandi. Ariko, bitewe n'ihame ryayo ryihariye ry'imikorere n'ingufu nyinshi zikoreshwa, abakora bagomba kubahiriza cyane gahunda y'umutekano ...
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