With the rapid development of electronic products, PCB printing has been expanded from single-layer to double-layer and high-precision multi-layer boards. Therefore, the circuit board hole processing […]

  Different reasons will cause copper come off from flexible PCB, here we analyze this phenomenon from manifacturing process and raw material aspect:     Manufacturing  […]

Copper fall off is a common problem in PCB fabrication. Let’s see the below reasons to learn more about it.   1. The copper foil is […]

There are two different selective welding processes: drag welding and dip welding.   The selective towing process is performed on a single small nozzle solder wave. […]