Tsev / Cov khoom lag luam dai "xa ntawv kho cua sov" Default sorting Tsi yog tej chaw Tsi yog qhov tseeb Tsi yog nqe: tsis rau siab Tsi yog nqe: yuav tsis tshua muaj Induction Preheat Vuam Tshuab Tom Qab Welding Thaum Tshav Kub Kub Kho Tshuab Nrog Induction PWHT System | Ncej Welding Thaum Tshav Kub Kub Kho Tshuab kev ntxhov siab nyem kev kho mob nrog induction