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Welded Steel Propane Cylinder Our advantage Diamond Quality Technical advantages Business level Healthy green Company Profile Weifang Hengsheng Gas Co., Ltd. is a Gas and Gas Cylinder company integrating distribution, wholesale and commercial services. Our company mainly produces and sells various industrial Gas and Gas Cylinder: Oxygen, Nitrogen, Carbon Dioxide, Mixed gas, Argon, Neon, Krypton, Helium, Hydrogen, etc; Propane, Acetylene, Sulfur Hexafluoride, Ethane, Ethylene, Liquid Ammonia, etc; Seamless Steel Cylinder, Seamless Aluminum Cylinder, Insulated Dewar Cylinder, Disposable Helium Cylinder, C