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 "Sinwa Zint" is a result of the technical collaboration between Sinwa Mekki and the American Pavco. This electroplating technology has 2 layers. The lower layer is the Zn-Ni alloy electroplating layer that is 10 times more corrosion resistant than Zinc electroplating; on top of that is "Topcoat" coating developed by Pavco. As such, corrosion resistance is leveled up to 20 folds. Iron rust resistance can last up to 2,000 hours, and zinc rust resistance up to 1,000 hours. This is the first time that the Japanese electroplating industry introduces Topcoat from a top American surface treatment company.