Puncture sleeve upper cover and puncture sleeve lower cover with high-precision sealing structure
The utility model discloses a puncture sleeve upper and lower cover with a high-precision sealing structure, which comprises a puncture core upper cover, the inner wall of the puncture core upper cover is fixedly connected with a release button, the two ends of the release button are provided with p...
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Format: | Patent |
Sprache: | chi ; eng |
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