Is the cost of changing the surface color of anodized alumina magnesium alloy high?

This question is a bit general, let me tell you something as I understand it.

1, you said to change the surface color should be in the anodic oxidation coloring bar.

2. Before coloring, the surface with pores must be formed by anodic oxidation, so that the color powder can be embedded in the surface of the aluminum parts to show color.

3, if you do the natural color of the workpiece, that is, do not change the color of the price is 1, then coloring is on the basis of 1 plus 0.5

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