Helium, Xenon, Argon manufacturer / supplier in China, offering 99.999% Purity Liquid Helium Gas with Volume250L/350L/500L/750L, 99.999% Purity Liquid Helium with Working Pressure 200bar/20MPa, 99.999% Purity Liquid Helium with Working Pressure 150bar/15MPa and so on.