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자료요약
HyProNC Black 650 ALK is non-chromium black passivate for alkaline non-cynanide zinc electroplated surfaces and zinc die castings. The combination of HyProNC Black 650 ALK and HyPro 200 produces a shiny, rich, black, non-chromium film that provides up to 150 hours of salt spray corrosion per ASTM B 117.