The color of the PCB surface is actually the color of the solder resistance. One is to prevent the occurrence of miswelding of components, and the other is to delay the service life of the device to

prevent oxidation and corrosion of the device line. If you know more about electronic products, you will find that PCB color is generally green. This is mainly because the green solder resistance

process is the most mature and simple, and the green plate is also more environmentally friendly. In addition to green, PCB board also has white, yellow, red, blue, matte color, and even

chrysanthemum, purple, black, bright green and so on. The existence of white, because it is the production of lighting products must be used color, and the use of other colors, mostly for the purpose

of distinguishing different product samples. The company from research and development to the whole stage of the product landing, according to the different uses of the PCB board, the

experimental board may use purple, the key board will have red, and the board inside the computer will use black, which is distinguished by color. As for green oil, its solder resistance ink is the

oldest, cheapest and most popular.