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Electric Baffle Door for Flue Gas and Coal Powder Isolation in Thermal Power Plant Pipeline Equipment D-Ld2000, Find Details and Price about Ventilation Butterfly Valve Damper Valve for Ventilation from Electric Baffle Door for Flue Gas and Coal Powder Isolation in Thermal Power Plant Pipeline Equipment D-Ld2000 - Hebei Bairun Electric Power Machinery Equipment Manufacturing Co., Ltd.