TechSmith: Cheng Guojun resigns as Secretary of the Board of Directors, and Song Zhuo will take over.

Danhua Technology Announcement: Due to internal work changes, Cheng Guojun has submitted his resignation as the secretary of the board of directors to the company's board of directors. The resignation is effective upon submission to the board of directors. After resigning as the secretary of the board of directors, Cheng Guojun will continue to serve as a director and general manager of the company. The board of directors has appointed Song Zhuo as the new secretary of the board of directors. The handover has been completed in accordance with the company's relevant policies and procedures, and therefore, this change in the secretary of the board of directors will not have any impact on the company.