7 Utility and 1 Design Patents
#5,933 in Beijing
#19,054 in China
#597,011 in the World
rank by utility patentsForward Citations = 11
Company Filing History:


Beijing Manmanzhai Technology Development Co., Ltd.
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#5,933 in Beijing
#19,054 in China
#597,011 in the World
rank by utility patentsCompany Filing History:


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