There are several main circuit board process
Single or double-sided? Single-sided panels are: light-painted hole to do the line corrosion pattern on the resistance welding characters spray tin! Milling type
Material production - open material --- inner line - press - mechanical drilling - plating - outer line - anti-welding - text --- surface treatment - molding --- test - Appearance inspection --- packaging shipping
Double-sided panels are: light painted hole copper copper plating to do graphics and then electroplated copper (tin) corrosion on the resistance welding characters! Spray tin and look! Multilayer board just a little more! More than two times drilling and laminating ~! The other is almost! Final test
