2. Develop-Etch-Strip (DES)Line
After exposure of artwork, multilayer PCB inner cores feed from clean rooms into an integrated system that develops, etches, and strips the inner layers. Inner layer process is to etch and form inner layer circuitry of PCBs. This IS system is stainless steel and titanium. Computers control the parameters of the process, yielding consistent quality. Exiting the line is a finished core.