uThis series of products is based onSpecial refrigeration equipment developed based on the requirements of low-temperature device for impact specimens in GB/T229-2007 "Metallic Charpy notch impact test method"Completely satisfiedThe temperature control indicators specified in GB229-2007.

This equipment uses electromagnetic control valves and high-precision intelligent instruments to control the flow of liquid nitrogen. It utilizes the principle of thermal equilibrium and cyclic stirring to achieve automatic uniform cooling and constant temperature of the sample. This equipment is easy to operate and has high work efficiency, making it an ideal sample cooling device for ultra-low temperature impact testing of materials.