What is the usage of Ultra low freezers? 

The usage for the Ultra Low freezers is a very good idea. Because most of the pople just now the usage is for the biological samples storage.  Absolutely, the  first Ultra low freezers was used for the sample storage. The sample storage is a common usage. There will be some samples need to be storaged for long term.  All of the samples storaged at the temperature below -70 ℃. It will keep the cell to be frozen for a long term. Then no water lose and cell damage for the samples.   

As far as the industry need to assebly the parts in the low temperature status. Then the Ultra low freezer will be used to cool down the parts. Such as the bearing assebling. We have to cool down the axis or the bearing before they were assembled. It make the bearing mounted precisely. 

We also use the Ultra low freezers to repair the touch screen for the mobile? Really?  Yes. Most of time we have to replace the screen if the glass of screen damaged by some reason.  As we know, the glue will be frozen if the temperature is low enough.  If the glue frozen, then we can take the damaged glass off the screen without damage the liquid screen.  That will be perfec way to repair the mobile touch screen. The usage has been use more and more in the industry. Not only for the mobile screen but also the larger screens.