Daim ntawv thov: cav, pa, system, tsheb, tsheb thauj mus los, engineering machinery, Heavy khoom, tub rog kev lag luam, khoom siv tshwj xeeb, roj yeeb nkab, tshuaj, hluav taws xob fais fab, nkoj, khoom siv tsev, generator unit thiab lwm yam, tag nrho cov industries thiab cov neeg muas zaub uas xav tau rwb thaiv tsev. thiab txo suab nrov.
