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上一条:Qianhong Wan, Lei Chen, Wenbin Li, Zhichao Zhang. A preparation method for ferromagnetic urea-formaldehyde resin. 2003-7-21, Chinese, ZL 03 1 30423.0
下一条:Lei Chen, Guiying Jia, Qianhong Wan. Method for preparing monodisperse hybrid silica gel microspheres through self-hydrolysis of methoxy-organosilane. 2017-7-28, Chinese, ZL 2015 1 0178500.9
