Stamping parts are made by stamping on the premise of small material consumption. The weight of the parts is light and the rigidity is good. After the plastic deformation of the sheet metal,the internal structure of the metal is improved and the strength of the stamping parts is improved.

Passivation is a method to transform metal surface into a state that is not easy to be oxidized and to delay the corrosion rate of metal.

After passivation treatment, it has the characteristics of absolutely not increasing the thickness of the workpiece and changing the color,which improves the precision and added value of the product, and makes the operation more convenient.

Because the passivation process is carried out in a non-reactive state, the passivator can be added repeatedly,so the life is longer and the cost is more economical. 

The passivation promotes the passivation film of oxygen molecular structure formed on the metal surface,the film layer is dense, the performance is stable, and it has the function of self-repair in the air at the same time,so compared with the traditional method of coating antirust oil, the passivation film formed by passivation is more stable. More corrosion resistance.