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一种聚氨酯套管留置针及其包装盒
inventor/creator：杨华伟;栾世方;孙振龙;殷敬华;石恒冲;闫顺杰;张德海;黄尉
Paten number/application number：CN201921682220.1
application/authorized announcemen date：2020-9-25
brief introduction：一种聚氨酯套管留置针及其包装盒
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