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徐丽、文钰、贺治国,一种无填料式生物除臭装置,201820753152 .2
Service Invention or Not:no
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徐丽、文钰、贺治国,旋转填料式生物除臭装置,201820034310.9
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贺治国、王晨元昊、杨添奇,一种从选锡尾矿中浮选回收萤石的方法,201710948847.6