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N’chifukwa chiyani mafakitale ambiri amadalira mafilimu apulasitiki poikamo zinthu? Kuyambira chakudya mpaka zamagetsi, mafilimu awa ali paliponse. Ndi opepuka, olimba, komanso osavuta kuwapanga. Koma n’chifukwa chiyani amagwira ntchito bwino chonchi?
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Kodi mudayamba mwadzifunsapo chifukwa chake mapepala a PVC amapezeka m'mafakitale ambiri chonchi? Kuyambira pa zomangamanga mpaka pa chisamaliro chaumoyo, kusinthasintha kwawo sikungafanane ndi kwina kulikonse. PVC yasintha kuyambira pomwe idapangidwa kumayambiriro kwa zaka za m'ma 1900 kukhala chinthu cholimba komanso chotsika mtengo. Mu positi iyi, muphunzira zabwino zake, zofooka zake, ndi momwe zimagwiritsidwira ntchito m'njira zosiyanasiyana.