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workpiece name: drill swivel check valve workpiece material: casting workpiece size:like | shaft processing demonstration air conditioning movement rod product model:like | workpiece name: connecting plate workpiece material: 4 5 # processing aperture: 1 7 learn more to view the videoreport | learn more to view the video for drilling and forging steel valve product model:like | workpiece name: reducer housing machining hole size:report | workpiece name: iron plate workpiece material: iron processing aperture:like | processing valve product model:people
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