THE SMART TRICK OF GOLDFINGER PCB FOR ELECTRONICS INDUSTRY THAT NO ONE IS DISCUSSING

Notice that, Simply because you positioned power on an inner layer, that doesn’t suggest you could’t set power in other places. You could continue to route power on the other signal layers as rails using copper pour, or as thick traces.Immersion Gold: The gold layer in immersion gold is pretty softer, so immersion gold PCBs could be less use