The focus on the quality of the metal polishing process also makes us pay more attention to the surface after metal treatment, regardless of polishing or passivation. There are a large number of vacuum tubes whose surfaces have been cleaned after welding, and they have begun to penetrate into the semiconductor industry to help solve various problems. Processing: stainless steel, copper, aluminum, titanium, tungsten, molybdenum, various alloys...etc. 4. Provide passivation data.