High Efficiency Cooling Crossflow Fans are a special type of fan that typically have high cooling efficiency and low noise performance. In the design, large sized blades are installed to produce greater air volume and higher air pressure, so the fan can absorb and expel heat in the air within the effective application. This fan is well-designed and adopts advanced technology such as inline design, which can reduce the resistance and increase the lift coefficient, thus improving the cooling effect. In addition, cross-flow fans have the motor and air blades in a cylinder for localised ventilation, which is characterised by the fluid flowing through the fan impeller twice, with the intake and exhaust directions in the same plane, and the discharged gas evenly distributed along the width of the fan, which results in a more even and efficient cooling effect of the fan. In addition, the motors of cross-flow fans use copper core coils and double ball bearings, which provide fast rotation speeds, low heat generation, good resonance, low vibration, low noise and long service life, all of which make cross-flow fans highly efficient and reliable in the cooling field.