Cov dej num muaj xws li prefab steel qauv loj-span industrial rhiav, loj factories, warehouses, aircraft hangars, noj hmo high-rise steel chaw ua hauj lwm vaj tse;qhov chaw ncej ru tsev qauv, skylight ntawm lub tsev teev ntuj, gymnasium, xinesmas, exhibition hall, tos hall, chaw ntau pob;thee cia shed ntawm fais fab nroj tsuag, thee mines, coking nroj tsuag, thee ntxhua khaub ncaws;coal transport corridor, high-rise building corridor;nqaij qaib tsev, qaib ua liaj ua teb, broiler nqaij qaib nqaij qaib ua liaj ua teb lub tsev, qe txheej incubator qaib tsim prefab nqaij qaib ua liaj ua teb, nyuj los, nees los, npua teb, yaj shelter barn nkuaj tsev ua liaj ua teb tsev thiab lwm yam ..