On June 13, 2024, Tianjin Kaihua Insulation Materials Co., Ltd. (hereinafter referred to as "Kaihua")“ Kaihua Materials ”）Received the inquiry letter on annual report issued by the Management Department of the listed company, requesting the company to explain in detail several financial issues in the 2023 annual report. Inquiry letter middle finger The operating income and net profit of Kaihua Materials fell for two consecutive years, and raised questions about the growth of the gross profit rate, the book balance of inventories, the cancellation of subsidiaries, other non current assets, payroll payable and the growth of period expenses.