North Chemical Industries Co.Ltd(002246) : the patent of a preparation method of nitrocellulose film is still in the substantive examination stage

March 27, 2022

After AI express, investors ask questions on the investor interaction platform: Secretary, how long can your NC film patent be applied for?

North Chemical Industries Co.Ltd(002246) ( North Chemical Industries Co.Ltd(002246) . SZ) said on the investor interaction platform on March 27 that the patent of "a preparation method of nitrocellulose film" is still in the substantive examination stage.

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