Nitrous Oxide, Cream Charger, Helium Gas manufacturer / supplier in China, offering Nitrous Oxide N2o Cylinder 640g/1364G/2000g Whipped Cream Charger, N2o Gas Cylinder 0.95L 640g Nitrous Oxide Canister 640g Whipped Cream Charger, 13.4L Cylinder Gas Helium for Balloon Helium Commercial Grade High Capacity Long-Lasting Cost-Effective for Large Events and so on.