污18禁污色黄网站,精品国产AⅤ一区二区三区,国产灌醉系列闺蜜,已满十八带好纸巾从此转人,久久人妻内射无码一区三区,亚洲无码免费观看黄色视频,精品免费综合三级,午夜激情精品视频,人天天爽夜夜爽精品视频,在线一级av免费

Product name:(Blue Zinc) 1. Sandblasting parts

Surface treatment: trivalent chromium blue zinc
Thickness of film: over 8 M
NSS: 72 hours without white rust, 240 hours without white rust

Overview of electroplating:


Electroplating refers to a surface processing method in which the cations to be plated in the bath are deposited on the surface of the base metal in the salt solution containing the metal to be plated by electrolysis with the base metal as the cathode. The performance of the coating is different from that of the base metal and has new characteristics. According to the function of the coating, it can be divided into protective coating, decorative coating and other functional coating.


Overview of electroplating:


Electroplating refers to a surface processing method in which the cations to be plated in the bath are deposited on the surface of the base metal in the salt solution containing the metal to be plated by electrolysis with the base metal as the cathode. The performance of the coating is different from that of the base metal and has new characteristics. According to the function of the coating, it can be divided into protective coating, decorative coating and other functional coating.