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Worm Gear EPDM Fcd Material Seat Operation Wafer Type Butterfly Valve-Made in China-5K, 10K, Pn10, Pn16, Find Details and Price about Marine Valve Wafer Type from Worm Gear EPDM Fcd Material Seat Operation Wafer Type Butterfly Valve-Made in China-5K, 10K, Pn10, Pn16 - Tianjin Zhonghui Valve Industry Co., Ltd.