What is hard gold, soft gold ... - PCB Manufacturer
2018-7-25u2002·u2002Flash Gold (Flash Gold) 'Flash' which derives from Flash, which means a quick gold-plated, in fact, it is hard gold plating 'gold-plated beforehand' program, electroplating nickel gold reference to the process, it USES a larger electric current and of the thick liquid trough, first in the performance of the nickel layer to form a layer ...
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