YongXin Electronics: The company's 2.5D packaging product line is currently undergoing sample verification with customers and has not yet achieved mass production.

Notice of Ningxia Electronic Stock Trading Risks The company's operating performance is affected by various factors such as macroeconomic conditions, downstream market development trends, and the competitiveness of the company's products, and therefore has a certain degree of uncertainty. The company has noticed that there is a high level of attention on advanced packaging in the market and media recently. The company's 2.5D packaging product line is currently in the process of sample verification with customers, and has not yet achieved mass production. In 2025, the company's 2.5D packaging product line generated revenue of 1.9497 million RMB, which is the amount of engineering development fees collected from customers in that year. This amount accounts for a very low percentage of the company's annual revenue and currently does not have a significant impact on the company's performance.