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Sefa Yochotsa Mchere Wamchere Wocheperako
● Chitsulo chakunja chimango
● Kusefedwa koyenera kwa G3-M5 kulipo, ndipo kusefera kwa ≥5.0um particles ndi 40% -60%.
● Zinthu zosagwirizana ndi dzimbiri zimagwiritsidwa ntchito ngati zosefera, ndipo zowulutsa za mini-pleated zimakhala ndi fumbi lalikulu.