Use refrigerant that meets international environmental standards； Intelligent control prevents overload and overcurrent operation of the compressor, and protects the compressor ； Protect personal health ； Closed circulation to protect the volatilization of refrigerant. Suitable for testing, chemical, biological and physical experiments that need to be maintained at low temperatures. Can be used in laboratories of medicine, health, food processing, chemical engineering, colleges and universities, and research institutes.

● Chemistry and biology: atomic absorption, ICP、ICP-MS， Nuclear magnetic resonance, biofermentation tank, chemical reactor (synthesizer), etc.

● Materials: electron microscope, X ray diffraction, X Fluorescence, magnetron sputtering, vacuum coating machine, laser, etc.

● It adopts a fully enclosed compressor of an internationally renowned brand, which has low noise and high reliability, ensuring the long-term and stable operation of the product.

● It adopts domestic high-performance circulation pumps or imported foreign high-pressure vane pumps. The pump pressure of the high-pressure pump is adjustable and has reliable quality.

● The circulation system adopts a closed type, which effectively prevents the volatility and pollution of refrigerant and saves resources.

● The circulation system is equipped with a filter device to clean the refrigerant and prevent the instrument pipeline from being blocked.

● It uses fluorine-free green and environmentally friendly refrigerant without chlorofluorocarbons, and meets international environmentally friendly refrigerant standards.

● New appearance design, small size and beautiful appearance.

● The built-in liquid storage tank liquid level display can intuitively display the liquid level in the tank.

● The circulation system is equipped with a pressure gauge to display the circulation system pressure.

● A variety of specifications and models to meet the needs of different users.

● The left and right side panels can be easily removed for easy system maintenance and cleaning.