Idan kana son sanin ƙarin bayani, kamar zance, samfura, mafita, da sauransu, da fatan za a tuntuɓe mu akan layi. Katin shaida na bututun ƙarfe maras sumul shine takardar shaidar ingancin samfur (MTC), wacce ta ƙunshi ranar samar da bututun ƙarfe mara nauyi, kayan ...
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