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PCB artwork of 12 Chinese Zodiac Signs

PCB artwork of 12 Chinese Zodiac Signs 12 Chinese Zodiac Signs include Rat, Ox, Tiger, Hare, Dragon,Snake, Horse,Sheep, Monkey ,Rooster, Dog and Boar! and there are many interesting stories. A long time ago, the Jade Emperor decided to select twelve animals for human beings in order to give humans time that belongs to human beings. As a result, the mortal animals launched a competition for the “Zodiac King”. At that time, the cat and the mouse were good friends. Before going to the [...]

Analysis of the deformation of the film in PCB process

First, the reasons for the deformation of the film and its solution: the reason: (1) Temperature and humidity control failure (2) The exposure machine temperature rises too high Solution: (1) Normally, the temperature is controlled at 22 ± 2 ° C and the humidity is at 55% ± 5% RH. (2) Use a cold light source or an aerator with a cooling device and continuously replace the backup film. Second, the process of film deformation correction: 1. Under the condition of mastering the operation technology of the [...]