Ice box, the shell is plastic PE material, there is refrigerant inside, the selection of high-tech biological materials prepared, clean, non-toxic, excellent cold performance, can be used repeatedly.In the process of cold chain transportation, different products need different freezing temperature environment, which can be achieved by adjusting the proportion of internal refrigerant content.Common cold chain transport requires a temperature range of -25 to -15℃, -10-0℃, 2-8℃, 15-25℃.