Shanghai Hynote Import & Export Co., Ltd (the hereinafter is reference as HYNOTE) focuses on producing and marketing rare gas, Special gas , Gas for electronics,Refrigerants and Gas Mixture. Including: Krypton, Neon, Xenon,Octafluorocyclobutane (C-318), Trifluoromethane (R23), Difluoromethane (R32), Methanefluoride (R41), Hexafluoropropylene, Ethylene, Propane(R290), Iso-butane(R600a),Oxygen, Nitrogen, Helium, Argon, Hydrogen, Propene,Sulfur Dioxide, Sulfur Hexafluoride, Nitrous Oxide, Ethylene, Methane, Ethane, Carbon Monoxide,Carbon Dioxide,Silane Mixture,ETO...