The main body is designed into special mechanical profiled structure of copper, The surface is nickel-plated.

主体为铜质特殊力学异型结构制造，表面镀镍。

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The main body is designed into special mechanical profiled structure of copper, The surface is nickel-plated.

主体为铜质特殊力学异型结构制造，表面镀镍。

youdao