A shekarar 2016, mun samar da ton 1000 na manyan bututun karfe mai diamita na ssaw don gina filin jirgin sama na Beijing Daxing, wanda aka yi amfani da shi a matsayin aikin shimfida bututun karkashin kasa.
ShareA shekarar 2016, mun samar da ton 1000 na manyan bututun karfe mai diamita na ssaw don gina filin jirgin sama na Beijing Daxing, wanda aka yi amfani da shi a matsayin aikin shimfida bututun karkashin kasa.