In todays electronics-dominated world a lot of different equipment is manufactured. The basis of every electronic device are the so-called PCBs (printed circuit boards) which are manufactured in a complex production process. This production step is usually carried out by contract manufacturers. The most delicate step is the galvanic copper plating process. Thin layers of copper are deposited onto a pretreated surface, into small contact vias and drilled holes. This sensitive process needs very close monitoring in order to achieve the product quality specified.