Waya mauna kuluka koyamba kuluka pambuyo plating, plating ndi njira zina, pambuyo mankhwala mawaya mauna kapena waya mauna ali ndi dzimbiri kukana, makutidwe ndi okosijeni kukana makhalidwe, angagwiritsidwe ntchito pomanga, mafuta, makampani mankhwala, kuswana, chitetezo munda, chakudya. processin...
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