Currently, we have more than 500 domestic invention patent applications, granted more than 300 pieces, international PCT patent application 25, in which three have passed the international authority (U.S. 2 Europe 1).
Currently, we have more than 500 domestic invention patent applications, granted more than 300 pieces, international PCT patent application 25, in which three have passed the international authority (U.S. 2 Europe 1).
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