Common problems in FPC flexible circuit board design

Some customers have designed profiles in Keep layer, Board layer, Top over layer, etc. and these profiles are not coincident, which makes it difficult for FPC Flexible Circuit Board manufacturers to determine which profile line to use.
PCB board etching process and process control

The process of PCB board? from light board to showing circuit pattern is a relatively complicated process of physical and chemical reaction.
Common causes and solutions of alkaline etching in PCB board

1. Problem: The etching rate in the PCB board? is reduced.Reason: due to improper control of process parameters.