Ƙofofin wuta na ƙarfe suna da ƙarfi mai ƙarfi da kyakkyawan juriya na wuta. Kayan da ke jure wuta da aka cika a cikin kofa da ganyen ƙarfe mai jure wuta ba shi da ƙazantawa. Tsarin jiyya na farfajiya na ganyen kofa shine fesa foda ko murfin PVC, waɗanda suke balagagge matakan kare muhalli.

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