This device is for local heat dissipation, and it can also be used as an external radiator. The overall size is 83×58×24cm. Suitable for computer host, laser marking machine water cooling, server water cooling, high power LED, water cooling , semiconductor water cooling radiator, UV fixed phone printer water cooling. This radiator needs to be used with a water-cooled head so that the radiator and the cold head form a water circuit, the cold head is attached to the hot spot to take away the heat, and the radiator dissipates the heat to achieve the cooling effect.