双环科技钠电业务获突破，股价近一周累计涨4.31%

Group 1 - The core focus of the news is on the progress of the sodium battery business of the company, with a significant milestone achieved as the first batch of products from the pilot line for sodium battery composite cathode materials was completed on February 6, 2026 [1] - The pilot line represents a key breakthrough from research and development to mass production, marking the first of its kind in Hubei province [1] - The company has sent samples to 18 downstream cell customers and received certifications from leading enterprises, indicating strong market interest and validation of its products [1] Group 2 - The company plans to increase investments in AI to enhance the level of its smart factory, reflecting a strategic shift from traditional chemical manufacturing to the new energy sector [1] - The recent stock performance has been positively influenced by the sodium battery developments, with a cumulative increase of 4.31% over the week from February 24 to 27, 2026 [1] - The stock price reached a high of 6.88 yuan on February 25, 2026, and closed at 6.77 yuan on February 27, 2026, indicating stable trading activity with a turnover of 69.1 million yuan [1]