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D941X-10c Electric Flanged Centerline Butterfly Valve Wcb Carbon Steel Body Rubber Soft Seat Pn10 on-off Butterfly Valve for Water Sewage Pipeline, Find Details and Price about Butterfly Valve Manual Wafer Butterfly Valve from D941X-10c Electric Flanged Centerline Butterfly Valve Wcb Carbon Steel Body Rubber Soft Seat Pn10 on-off Butterfly Valve for Water Sewage Pipeline - Derun Environmental Protection Technology (Tianjin) Co., Ltd.