Wannan layin samar da kayan aiki ne na musamman don samar da bututun da aka yi wa dogon lokaci a cikin ƙarfe, gini, sufuri, injina, motoci da sauran masana'antu.Yana amfani da sassan ƙarfe na wasu ƙayyadaddun bayanai azaman albarkatun ƙasa, kuma yana samar da bututun murabba'in ƙayyadaddun da ake buƙata ...
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