Vrcooler provides a hydrophilic coating of aluminum fin which called blue fin, it greatly helps to remove moisture from the fin.
Our hydrophilic fins are used for low temperature applications, and has set up a development to help from the volume fin piece of moisture loss. This advanced material can increase the time of defrosting cycle and shorter the ice time of fin area, it is a blue color which make simple identification.
 Blue fin condenser |  Condenser coil with hydrophilic fin |
http://www.vrcoolertech.com/condenser-coil/blue-fin-condenser.html