1. Cov ntsiab lus sib txawv Kub-dip galvanizing, tseem hu ua kub-dip galvanizing thiab kub-dip galvanizing, yog ib txoj kev zoo ntawm cov hlau los tiv thaiv corrosion, feem ntau yog siv hauv cov khoom siv hlau hauv ntau yam lag luam. Nws yog txhawm rau txhawm rau xeb-tshem tawm steel qhov chaw hauv molt ...
Nyeem ntxiv