Chromic acid-sulfuric acid etching solution has been applying in the plating process on ABS resin which has been used most commonly as plastics plating. By applying PA/ABS resin which has excellent mechanical properties, we developed chromic acid etching-free plating process. This plating process gives high plating adhesion, and one rack treatment is applicable. So at first, we wish to introduce this plating process, and report our research for plating deposition mechanism and adhesion mechanism in one rack system mainly.
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