"Mini Air Cooling Fan" both sides have their own governor in a row atop the heatsink. In the mold design must adopt a two-way side parting and core body. Therefore, the key to the fan speed controller is the cover design of injection mold side parting and pulling mechanism design. In the "Mini Air Cooling Fan" superstructure governor injection mold design, the use of dual-chamber die layout. Gating system uses side gate, from the side into the water products. Does not affect the product appearance. Heatsink shaped by side parting and core body. "Mini Air Cooling Fan" new approaches to the use of putting launched. Cooling water-cooled, using the straight-through cooling water hole layout.