Ua ntej, ua ntej nkag siab txog cov dej lim dej, peb yuav tsum nkag siab qee cov ntsiab lus lossis qhov tshwm sim: ① RO membrane: RO stands rau Reverse Osmosis. Los ntawm kev siv lub zog rau cov dej, nws cais cov khoom me me thiab teeb meem ntawm nws. Cov tshuaj phem no muaj xws li cov kab mob, kab mob, cov hlau hnyav, cov seem ch...
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