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Marine lever floating ball type drain valve
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Manual switch ultra-low temperature stop valve
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Low-leakage high-temperature butterfly valve for marine diesel engine
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Double-sealing ball valve with compensation valve seat
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Fire-resistant butterfly valve
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Hydraulic flow control type stop valve
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Marine chemicals butterfly valve
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Composite packing sealing structure
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Eccentric ultra-low temperature ball valve of maritime work inclined plane
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Spherical board of hollow center butterfly valve
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Marine high-performance flexible sliding composite sealing seat
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Butterfly valve and high-performance valve seat of chemical butterfly valve thereof
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Double-shaft eccentric ball body for ultralow temperature ball valve
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Composite sealing self-closing discharge valve
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A kind of sealing ring and the sealing compensation type center butterfly valve that the sealing ring is set
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A kind of compound seal ring of the class cam design suitable for eccentric-butterfly-valve
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A kind of ultralow temperature ball valve seals
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A kind of butterfly valve seal circle pre-assembled auxiliary tool and its method
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Oil product sampling device
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