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A kind of multiple damping and the diesel engine fire plant that offset damping can be controlled
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A kind of non-combustion-type tobacco suction unit
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A kind of centralizer of petroleum exploration instrument
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A kind of petroleum exploration soil sampling apparatus
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A kind of anticorrosion antifreeze liquid production equipment being laid with dredging for petroleum pipeline
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A kind of petroleum pitch emulsion coating material preparation facilities
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A kind of efficient rare earth processing building stones grinding equipment
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A kind of protective device of the online infrared measurement of temperature instrument of rare earth pyrometallurgical processes
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A kind of rare earth recovery filter device
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A kind of pipeline processing bender
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A kind of self-rotary pipeline cleanser
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A kind of soft ventilation duct process units
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A kind of heavy caliber special type tube cutting device
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A kind of intelligent oil production pump
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A kind of wet processors for Petroleum refining gas cleaning processing
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