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CN108194005A
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A kind of novel no door weather-tight shutter
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CN108194006A
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A kind of double dynamical no door weather-tight shutter
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Spiral air pipe flange connecting mechanism
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Spiral air pipe branch pipe connecting mechanism
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CN107537918A
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A kind of circular flange punching Digit Control Machine Tool
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CN107538036A
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A kind of circular flange porous processing device
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CN107538029A
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A kind of three-shaft linkage working machine
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CN107538035A
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One kind automatically controls machining tool
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CN107538034A
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A kind of hull machining tool
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CN107543011A
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A kind of soft removable pipeline heat insulation set
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CN107538033A
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A kind of numeric control drilling machine tool
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CN107539448A
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A kind of adjustable ventilation grid
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Marine rectangular watertight air-operated damper
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Side opening type ventilation device with weather tight mechanism
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