Xov Xwm Tuam Txhab

Raws li txoj cai, txheej txheej muaj ob lub luag haujlwm tseem ceeb: kho kom zoo nkauj thiab kev tiv thaiv uas yog qhov tseem ceeb ntawm kev lag luam. Cov txheej txheem ua haujlwm tuaj yeem siv los hloov cov khoom ntawm lub substrate, xws li adhesion, wetability, corrosion resistance, los yog hnav tsis kam. Hauv steel indus ...Nyeem ntxiv»