Enhance the product surface as smooth as a mirror.
提高产品表面的光洁度，使之达到镜面效果。
The plating: back to back the product surface finishes in the process.
退镀：将制件表面镀层退除的过程。
Enhance the product surface as smooth as a mirror.
提高产品表面光洁度，使表面光洁度可达到镜面。
Enhance the product surface as smooth as a mirror.
提高产品表面光洁度，使表面光洁度可达到镜面。
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