Poyerekeza ndi makina osindikizira achikhalidwe, osindikiza a UV ali ndi ubwino wogwiritsa ntchito mosavuta, osapanga mbale, kupanga nthawi imodzi, kuthamanga kwachangu komanso kulondola kwambiri.Sili malire ndi zipangizo ndi ubwino zina zambiri.Chifukwa chake, opanga ambiri amasankha osindikiza a UV.Koma chifukwa chiyani...
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