Nitrous Oxide, Helium Gas, Ethylene Gas manufacturer / supplier in China, offering Yds-30 Cryogenic Liquid Nitrogen Container for Medical Facilities Liquid Nitrogen Tank, Yds-6 Yds-2 Dewar Tank Portable Cryogenic Liquid Nitrogen Cylinder for Mobile Labs, Yds-20 High Volume Liquid Nitrogen Storage Tank for Breeding Centers and so on.