Portable Disposable Small Helium Cylinder

Portable Disposable Small Helium Cylinder

    Helium tank description Yuantong gas has a history of nearly 23 years in Helium which is established on year 1995. Helium is the lightest element after hydrogen, and represents in nature in limited quantities (only 5 ppm of the atmosphere). It is a nonflammable and nontoxic gas. Helium is inert...