正丹股份（300641）8月8日主力资金净流出3271.13万元

Group 1 - The stock price of Zhengdan Co., Ltd. (300641) closed at 23.19 yuan, down 1.02% with a turnover rate of 1.86% and a trading volume of 98,900 lots, amounting to 230 million yuan [1] - The latest financial results for Zhengdan Co. show 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, a year-on-year increase of 120.35% [1] - The company has a current ratio of 23.386, a quick ratio of 21.732, and a debt-to-asset ratio of 3.40% [1] Group 2 - Zhengdan Co. has made investments in 5 external companies and participated in 57 bidding projects [2] - The company holds 4 trademark registrations and 102 patents, along with 80 administrative licenses [2]