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Petroleum and petrochemical valve with buffer structure
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Detachable wellhead device for oil field
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A kind of long-distance transport pipes high performance valve
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A kind of high parameter valve that stability is high
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A kind of anti-leakage self sealing valve
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A kind of quantitative water transfer valve
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a kind of valve with self-locking function
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A kind of depositing dust environment-friendly vehicle dual-purpose with cleaning
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Double disc capable of being unfolded through hinge shift
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Heavy-caliber axial flow type check valve
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Eccentric cam flow regulation control valve
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Self-operated automatic stop and check adjusting device
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Self-balance type flat gate valve
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Centrifugal oil-water separator
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Fixed ball valve capable of being opened and closed easily
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