Big cryogenic liquid nitrogen container is taken highly vacuumed multi-circle insulation technology to produce the biological liquid nitrogen containers/tanks, which have good performance of low temperature insulation ,and evaporation can be let down to minimum.

For the present, it mainly used to Animal semen preservation activity and The preservation of biological samples activity. In Animal semen preservation acitivity ,it is often used to store superior male cattle's and rare animal's semen ,such as ox, sheep,panda,it also be used for long-distance transport.such as YDS-50,the static holding time is about 235days,it  completely meet the husbandry’s requirements.

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