SINOSTONE has postponed some fundraising projects to March 31, 2026

Minsheng Securities conducted a review of the delay in certain fundraising investment projects of SINOSTONE. In 2023, SINOSTONE issued convertible bonds to raise 540 million yuan, with a net amount of 532 million yuan. As of September 19, 2025, the integrated research and development manufacturing project of Luocheng Silicon Crystal New Materials has cumulatively used 267 million yuan, with an investment progress of 50.26%, and a balance of 288 million yuan in the special fundraising account. Affected by macroeconomic conditions and market demand, the company has postponed the project's expected usable status from September 30, 2025, to March 31, 2026. The sponsor believes that this delay aligns with the company's needs and planning, follows the approval procedures, and does not involve any disguised changes in direction that would harm shareholder interests, and has no objections to the delay