①.Takaitaccen bayani na sarrafa kayan aikin Sheet karfe ana kiransa sarrafa karfe. Musamman misali, yin amfani da farantin bututu, guga na ƙarfe, tankin mai, bututun iska, girman girman gwiwar hannu, wurin lambun rana, mazurari, da sauransu, babban tsari shine ƙarfi, lanƙwasa bakin zare, lankwasawa, walƙiya ...
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