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High Quality Durable Single/Double-Acting Pneumatic Flanged Butterfly Valve for 10inc Ductile Iron EPDM, Find Details and Price about Pneumatic Flange Butterfly Valve Flange Butterfly Valve from High Quality Durable Single/Double-Acting Pneumatic Flanged Butterfly Valve for 10inc Ductile Iron EPDM - Fudesheng (Jiangsu) Automatic Control Valve Manufacturing Co., Ltd