Fayilin na gaban daga Guangdong Junyou Steel Structure Co., Ltd. shine abin da yaƙi da amfani da ke ƙima wanda aka ƙera don gani da shawarwari na tarayya, ta ba da alkaru, tsayayyen da karkashin don amfani da su a cikin yin ƙasa, gidan, da jami'ar tarayya. Wannan fayilin ana zauna shi da kuma tashar shi don nuna mafautin alkaru, tsayayyen alkaru, da karkashin don amfani da shi a cikin abubuwan da ke gaban kasa kamar yadda suka shafi, madaffin, tashin, da kuma barin na gaban kasa a cikin gidan, kajin, da abubuwan jami'ar tarayya. Ana samun shi a cikin nau'akan da dace (angles, channels, I-beams, plates) da kuma ma'ajiyoyi (mild steel, high-strength low-alloy steel), kuma za a iya canzawa shi ta hanyar cuttawa, tura, welding, da kuma galvanizing don gani da za'awar buƙatun aikin. A zonza karamin kwaliti na tsaba, idan fayilin ya tattara testing don nuna composition na kimia, performance na alkaru, da kuma tsin tafiyar don gani da standardun siyasa (kamar ASTM, BS ko GB). Fayilin na gaban kasa ya ke da irin wani ma'ana ta hanyar nuna mafautin da zai iya amfani da shi sabinsu, ta ba da tara zuwa cikin siyasan gaban kasa na gaskiya, kuma tsayayyen da zai iya taka leda zuwa cikin halayen hawa na kima, seismic activity, da kuma tsoni (idan aka amfani da alhurwa). Ta hanyar residential, commercial ko industrial projects, wannan fayilin ta ba da asalin da ke tsauri, mafautin da kuma mai cistina, ta hanyar karamin kwaliti na kuma koyayyen al'ummar na shagon.