"How to rework blue zinc plating defect"

2004

I am facing with the following problem. My finished good with blue zinc plating rusted over time. Instead of re-plating is there other rework method? Is there can spray solution?

Thanks.

KC Lim
Electronics Mfgr. - Singapore
^

2005

I am facing with the following problem. My finished good with blue zinc plating color changed over time. Instead of re-plating is there other rework method? Is there can spray solution?

Yang Yun
York Transport Equipment Ltd. - Singapore
^

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