21
2018-06
The purpose of metal surface treatment technology is to improve the surface hardness, wear resistance and corrosion resistance, so as to improve the q...
21
2018-06
Commonly used are the following oxidation coloring methods: 1. anodized film of aluminum anodized film is dyed by adsorbing dyes. The anodic oxide f...
21
2018-06
In order to quickly promote green environmental protection production, dispel the doubts of enterprises. We put forward the whole package of environme...
