Core Viewpoint - The article emphasizes the importance of efficiently filtering and interpreting key announcements in the investment landscape, providing insights into potential investment opportunities within a short timeframe [1]. Group 1: Selected Highlights - On January 20, a contract worth 328 million yuan for special functional materials for aircraft engines was signed by Huayin Technology (688281), resulting in a stock increase of 7.81% [2]. - Tongfu Microelectronics (002156) announced that its storage production line has entered mass production, leading to a stock price surge and hitting a historical high after a brief initial flat opening [2]. - Zhongtung High-tech (000657) reported an increase in tungsten metal reserves by 91,700 tons, which contributed to its stock reaching a new historical high after a slight initial increase of less than 1.5% [2]. Group 2: Today's Overview - A company signed a sales order for high-end optical devices in the optical communication sector worth 1.28 million USD [3]. - A leading supplier of photomasks has initiated trial production of 40nm process products, indicating advancements in semiconductor technology [3]. - A company has developed a high-voltage frequency converter that has passed inspection by the China National Nuclear Corporation, with projected net profit growth of 386%-628% year-on-year by 2025 [3].