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Uhlelo lokunisela ngepayipi le-PVC
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Ngokukhula kwesidingo sokonga amanzi ngendlela efanele kwezolimo zesimanje, umklamo wesayensi wohlelo lokunisela kanye nokukhethwa kwezinto zamapayipi kube ukhiye. Njengezingxenye ezibalulekile ze…