Hluav taws xob galvanized hlau yog ib pawg ntawm ntau cov hlau hlau, dav siv, hluav taws xob galvanized hlau yog ib hom galvanized hlau hlau cov khoom ua tiav los ntawm cov hlau tsis zoo carbon hlau, tom qab kos molding, pickling xeb tshem tawm, kub annealing, kub galvanized. .Txias...
Nyeem ntxiv