Qhov no laser-txiav weathering steel npo vaj huam sib luag yog zoo meej rau kev kho kom zoo nkauj koj lub vaj thiab weathering steel muaj qhov zoo ntawm kev tu-dawb. Xaiv weathering steel vaj huam sib luag thiab laj kab, ruaj, zoo nkauj thiab dav, lub neej ua haujlwm ntev.