CDG General Valves: Flexible Seat Gate Valve, Hydraulic Control Valve, Multifunctional Pump Control Valve, Filtration Piston Control Valve, Low Resistance Backflow Preventer, Butterfly Valve, Check Valve, Filter, Balance Valve, Exhaust Valve, Rubber Joint, Fire Valve, Heating Valve, Electric/Pneumatic Valve, etc. Products are widely used in construction, petroleum, chemical industry, coal chemical industry, natural gas, electricity, medicine, metallurgy, aerospace, paper and many other fields.