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Aluminum Alloy Butterfly Valves DN200 for Powder and Granular Material with Pneumatic Actuator and Solenoid Butterfly Valve, Find Details and Price about Solenoid Butterfly Valve Wafer Butterfly Valve from Aluminum Alloy Butterfly Valves DN200 for Powder and Granular Material with Pneumatic Actuator and Solenoid Butterfly Valve - Jiangsu Zhengliang Marine Accessory Co., Ltd.