Datong Tairui obtains patent for passive room interior door cover device with built-in ventilation function

According to news from the financial industry on December 11, 2024, information from the State Intellectual Property Office shows that Datong Tairui Group Construction Co., Ltd. has obtained a project called \”a passive room interior door with its own ventilation function\” The patent for \”Set of Devices\”, authorization announcement number CN 110924797 B, application date is December 2019.

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