Choyamba, tisanamvetsetse zoyeretsa madzi, tiyenera kumvetsetsa mawu kapena zochitika: ① RO nembanemba: RO imayimira Reverse Osmosis. Mwa kukanikiza madziwo, amalekanitsa tinthu ting’onoting’ono ndi toipa. Zinthu zovulaza izi ndi monga ma virus, mabakiteriya, zitsulo zolemera, zotsalira ...
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