"Cooling Fan Manufacturer" resin sealing technology. Resin sealing technology moisture from the previous two techniques evolved. The technology for the production of a mold motor special addition. When the water-repellent treatment, the motor is set in a mold, and then poured into the low concentration of the epoxy resin in a vacuum, "Cooling Fan Manufacturer" epoxy resin in a vacuum, into the respective corners of the water molecule as a motor. After be completely filled, drying, and finally form a three-dimensional plastic overall. Outside absolutely can not see the motor structure. "Cooling Fan Manufacturer" motor is completely sealed. The motor may be a long time to work under the water. After drying the epoxy resin does not generate a chemical reaction with water. Waterproof rating to IP68. The cost is not more expensive than the PVD coating technology.