Aluminum alloy surface treatment is usually divided into polishing, electroplating, spraying color.
The natural color of aluminum alloy is to polish the aluminum alloy products formed by die-casting and protect them with transparent oil seal layer. (Polish)
Second is that after polishing, a protective coating of chromium plating is applied to the surface of the product. ( Chrome)
Other colors are colors that are needed to spray the surface after polishing. (Coated)
The polish aluminum is still a little shiny, but not as brightly as chrome surface.
Coated different colors.
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