Shenzhen Stock Exchange has issued an annual report inquiry letter to Beijing Jetsen Technology, requesting the company to explain the reasons and rationality of the significant changes in revenue by product category and the reasons and rationality of the fluctuation in gross margin for each industry and product, combined with changes in business model, sales prices, costs, major customers and suppliers, and comparable companies in the same industry. The company is also required to further verify and explain whether its income and cost accounting is true, accurate, and in compliance with the relevant provisions of the "Enterprise Accounting Standards".