Analysis of the reasons why there is no copper in the copper-plated copper in the holes of PCB boards
Analysis of the reasons why there is no copper in the copper-plated copper in the holes of PCB boardsUsing different resin systems and material substrates, different resin systems will lead to obvious differences in the activation effect and copper-plated copper treatment. In particular, some CEM composite substrates and high-frequency silver substrates are specific. When doing…













