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Pneumatic Electric Worm Gear Box Lever Ductile Iron Stainless Steel Lug Type Wafer Butterfly Valve, Find Details and Price about Lug Wafer Butterfly Valve Di Ductile Iron Lug Wafer Butterfly Valve from Pneumatic Electric Worm Gear Box Lever Ductile Iron Stainless Steel Lug Type Wafer Butterfly Valve - Hebei Peng Guang Valve Trade Co., Ltd.