Cov qauv hlau yog cov qauv tsim los ntawm cov khoom siv hlau thiab yog ib qho ntawm cov qauv hauv tsev loj.Cov qauv no tsuas yog tsim los ntawm cov kab hlau, steel kab, steel trusses thiab lwm yam khoom ua los ntawm cov hlau thiab steel phaj, thiab siv silanization, ntshiab manganese phosphating, ntxuav thiab ziab, galvanizing thiab lwm yam txheej txheem tiv thaiv xeb.
* Nyob ntawm koj daim ntawv thov, peb tuaj yeem tsim cov kev lag luam zoo tshaj plaws thiab ruaj khov steel ncej los pab koj tsim tus nqi siab tshaj plaws rau koj qhov project.