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CN102926716A
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Oil pumping unit system
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CN102943651A
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Pumping unit transmission system with fixed pulley
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Oil field monitoring system
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CN102966335A
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Transmission device of oil sucking machine
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CN102926717A
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Transmission belt assembly of oil pumping unit
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CN102926718A
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Oil pumping unit with built-in speed reducer
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CN102945038A
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Oil well real-time monitoring system
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CN102943653A
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Driving belt assembly
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CN102943652A
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Screw pump system
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CN102966334A
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Electric submersible pump system
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CN102943647A
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Oil well thick oil heating system
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CN102506037A
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Three-way connection piece
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CN102355806A
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Cabinet frame combined from three-way connecting pieces
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CN102506293A
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Longitudinal beam profiled bar for cabinet
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CN102355804A
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Single-layer machine cabinet door beam
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CN102506292A
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Longitudinal beam profiled bar for cabinet
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