Nhanganyaya: Munyika inogara ichishanduka yetekinoroji, mabhodhi edunhu akadhindwa (PCBs) ndiwo musimboti wemidziyo yemagetsi isingaverengeki. Kwemakore, kudiwa kwemaPCB madiki, anokurumidza, uye anoshanda zvakanyanya kwakawedzera, zvichikonzera kuwedzera kwekutsvaga nekusimudzira (R&D) uye hunyanzvi hunodiwa ...
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