DL Series Table-top Low Temperature Cooling Recirculator adopt air-cooled enclosed compressor refrigeration and microcomputer intelligent control system, to provide low temperature cooling water (liquid) flow or low temperature constant temperature water (liquid) flow, in order to meet with cryogenic liquid and cooling water to cool down or constant temperature instruments, such as rotary evaporator, fermentation tank, electron microscope, low temperature chemical reactor, electron spectrometer, mass spectrometer, density meter, freeze dryer, vacuum coating instrument, reactor, etc.