xitichi xa mafurha yo tala ya xihalaki lexi xi fambisiwaka hi bp southern africa eeast london xi xaviseriwile wasaa, khamphani yo phurosesa tikhemikali ta oyilimbisi leyi tiyimelaka.

wasaa yo renga ndaka yoṱhe i sudzu luseaho ine ya vha hone afho kha tshomedzo dza u endedza zwivhaswa khathihi na mikovhe ya 20% i re kha phaiphi dzi no bva afho hune zwikepe zwa ima hone dzi tshi ya kha tshomedzo dza hune zwivhaswa zwa endedzwa zwi tshi bva hone.
