Mu rwego rwo gukuramo plastike, urumuri rwinshi rugwa kuri extruder ubwayo, ifarashi yakazi ihindura ibikoresho fatizo mubicuruzwa bitandukanye. Ariko, inyuma yinyuma, itsinda ryibikoresho byunganira bigira uruhare runini mugukora neza, gukora neza, kandi byujuje ubuziranenge ...
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