Ƙofar wuta ta ƙarfe tana kunshe da firam ɗin ƙarfe da ganyen ƙarfe na ƙarfe. Tsarin karfe zai iya tabbatar da cewa ba shi da saukin kamuwa da lalacewa da lalacewa ta waje, kuma ana iya amfani dashi akai-akai na dogon lokaci ba tare da maye gurbin ba.

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