Tukwane mai narkewa, kayan aiki mai mahimmanci a fagen aikin ƙarfe, simintin gyare-gyare, da kimiyyar kayan aiki, yana aiki a matsayin tushen tushe don narkewa da sarrafa karafa daban-daban a yanayin zafi. Wannan akwati na musamman, wanda aka ƙera don w...
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