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A kind of surface antirust paint for metal bellows
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Technology for removing rust on surface of brass corrugated pipe
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A kind of synthetic material for being used to manufacture multilayer corrugated pipe
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Novel vacuum supplement hose
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Novel vacuum four-way connector
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Reactive power compensator
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Novel aviation vacuum elbow
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Novel vacuum connecting pipe
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Novel vacuum flange for aviation
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Vacuum two-way straight joint
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Vacuum elbow pipe for airplanes
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