The quality of PCB etching and its early problems
The structure of the etching equipment and the etching liquid of different components will affect the etching factor or side etching degree, or, in optimistic terms, can be controlled. Some additives can reduce the degree of corrosion. The chemical constituents of these additives are generally trade secrets, and their developers are not disclosed to the outside world.
In many ways, the quality of PCB (Small volume pcb manufacturer) etching has existed long before the board entered the etching machine. Because there is very close internal relation between each process or process of printed circuit processing, there is no process without any influence from other processes without affecting other processes. Many of the problems that are considered to be quality of etching actually exist in the process of film removal or even more recently.