In some cases we make a protective lacquer for PCBs that are used in extreme conditions; this provides protection against moisture, for example. We have a Dima HC-200 coating robot. For lacquering, a program is made for the product that specifies what parts of the board need to be coated. No separate protective measures need to be taken for connectors, for instance. The lacquer used is UV cured and it dries the same day.