Be careful when filling liquid nitrogen.

The tank must be slowly filled and pre-cooled for the new or in the dry state container,in case the cooling is too fast to damage the bladder and reduce the using life of the tank.

When filling liquid nitrogen,do not pour the liquid nitrogen in the vacuum vent, so as to avoid the vacuum drop.

The cover is made of insulator, which can prevent the evaporation of liquid nitrogen and can also act as a fixed lifting cylinder, so as to minimize wear and tear on the switch to prolong the service life.

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