Problems of resistance welding layer and steel mesh layer
2021-12-08
The common problems of solder resist layer and paste layer in PCBA Factory: the solder mask layer on PCB circuit board is used as the layer for solder resist window opening (without green oil) (topsolder is the window opening layer of the top solder resist layer, and bottomsolver is the window opening layer of the bottom solder resist layer). When using the solver for resistance welding window openin
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