Gas Valve, Oxygen Valve, Cylinder Valve manufacturer / supplier in China, offering ISO15500 International Standard Certified Manual Control with Simple Operation Logic Specialized for CNG Vehicle Conversion Systems High-Strength Brass, Specialized for CNG Vehicle Conversion Systems High-Strength Brass Material Adapted to Gas Media One-Piece Forged Structure with High Toughness, Factory Direct Sales Hpb59-1 Brass LPG Cylinder Valve with Filling Manual Control with Simple Operation Logic and so on.