The circuit board with black solder mask is called black oil plate. As we all know, in the presence of water, pure copper and oxygen contact each other, which is easy to cause copper oxidation
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Shenzhen Hongrui Photoelectric Technology Co., Ltd.: Professional LCD screen, LCM display module, LED backlight, TP touch screen and other related products design, development, manufacturing factory.
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Shaanxi Dongyujia Iron and Steel Co., Ltd.: Welcome to wholesale cheap stainless steel, carbon steel, galvanised steel, aluminum alloy, stainless steel coil from professional manufacturers and
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