正丹股份（300641）8月11日主力资金净流出1000.39万元

Group 1 - The core viewpoint of the article highlights the financial performance and stock activity of Zhengdan Co., Ltd. as of August 11, 2025, showing a slight increase in stock price and significant growth in net profit [1] - Zhengdan Co., Ltd. reported total revenue of 1.429 billion yuan, a year-on-year increase of 3.37%, and a net profit attributable to shareholders of 630 million yuan, reflecting a substantial year-on-year growth of 120.35% [1] - The company has a low debt ratio of 3.40%, indicating strong financial health, with current and quick ratios at 23.386 and 21.732 respectively [1] Group 2 - Zhengdan Co., Ltd. has made investments in five companies and participated in 57 bidding projects, showcasing its active engagement in business expansion [2] - The company holds 4 trademark registrations and 102 patents, indicating a strong focus on intellectual property and innovation [2] - Additionally, Zhengdan Co., Ltd. possesses 80 administrative licenses, reflecting its compliance and operational capabilities within the industry [2]