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wwei

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4Â¥2008-01-18 08:03:55
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ru0629

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It's difficult to test the hardness of the plating layer ( too thin).
If nickel's thickness over 8 um .You can get the data of HV250~350 .
Cr is over HV600 but you cannot detect it by simple hardness equipment .
3Â¥2008-01-18 06:07:04
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