A cikin tsarin samar da walda na karfe, za a sami rashin lahani na karfe idan hanyar walda ba ta dace ba. Mafi yawan lahani shine fashewar zafi, fashewar sanyi, tsagewar gurguzu, rashin haɗuwa da shigar da bai cika ba, stomata da slag. Zafafan fata. Ana samarwa duri...
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