Niaj hnub no, Tanggang Lub Nroog tseem ua kom tsis muaj zog, nqaim txoj siv khov kho 20-30 hlau khoom poob 20 steel poob 20-50 hloov ntau yam tsis muaj zog, steel billet plaub hau ncaj tuaj yeem yog chaw 3380-3370, yav tav su lossis poob txog 30.
Cov lus pom thaum tav su: Tangshan txoj siv sia nqaim ruaj khov thiab nqis 20, tom qab poob, qee qhov txhim kho, thiab qee qhov tseem tsis muaj zog; nruab nrab-qhov nruab nrab-band ua tau zoo tsis zoo.
Sep 20, 2019
Lub Hlau nqe sib tw
Xa kev nug
