钢研纳克（300797）7月31日主力资金净流出1678.80万元

Group 1 - The core viewpoint of the news is that Steel Research Nack (300797) has shown a decline in stock price and significant net outflow of funds, while also reporting positive growth in revenue and net profit for the first quarter of 2025 [1][3] - As of July 31, 2025, Steel Research Nack's stock closed at 14.53 yuan, down 1.36%, with a turnover rate of 1.66% and a trading volume of 62,800 hands, amounting to 91.98 million yuan [1] - The company experienced a net outflow of 16.79 million yuan in principal funds, accounting for 18.25% of the total transaction amount, with large orders contributing to the majority of the outflow [1] Group 2 - For the first quarter of 2025, Steel Research Nack reported total operating revenue of 21.9 million yuan, a year-on-year increase of 7.18%, and a net profit attributable to shareholders of 16.08 million yuan, up 33.28% year-on-year [1] - The company has a current ratio of 2.104, a quick ratio of 1.459, and a debt-to-asset ratio of 41.08% [1] - Steel Research Nack has made investments in 7 companies, participated in 1,203 bidding projects, and holds 71 trademark registrations and 313 patents [2]