Guoxin Micro: Do not revise the conversion price of Guoxin Micro convertible bonds downward.

Notice from Tsinghua Unigroup: From February 24, 2026 to March 16, 2026, the company's stock has experienced a situation where the closing price was lower than 85% of the current conversion price on at least fifteen trading days out of thirty consecutive trading days, triggering the downward revision condition for the conversion price of "Tsinghua Unigroup Convertible Bonds". After deliberation and approval at the thirty-ninth meeting of the eighth board of directors, the board of directors decided not to exercise the right to downwardly revise the conversion price of "Tsinghua Unigroup Convertible Bonds" this time. Furthermore, within the next three months starting from the next trading day, if the downward revision condition for the conversion price of "Tsinghua Unigroup Convertible Bonds" is triggered again, no downward revision proposal will be put forward.