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Urupapuro rw'icyuma rusobekeranye Urupapuro rwo Kuzitira
Ibyuma bisobekeranye ni impapuro z'ibyuma, aluminiyumu, ibyuma bitagira umwanda cyangwa ibibyimba bidasanzwe byacumiswe hamwe nu mwobo uzengurutse, kare cyangwa imitako mu buryo bumwe. ). Ubunini busanzwe buri hagati ya .020 kugeza 1 ″ kandi burenze.