mankhwala Phunziro pankhaniyi

1.Our mankhwala ankagwiritsa ntchito makampani otsatirawa

2.Drinking madzi ndi mankhwala madzi ogwiritsidwa ntchito

3.Hydrogen peroxide chomera zipangizo

4.Industry mankhwala chothandizira

zipangizo 5.Fertilizer yaiwisi

wothandizila 6.snow-kusungunuka ndipo desiccant

7.Industry mankhwala zowonjezera

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