隧道股份（600820）8月12日主力资金净流出2941.30万元

Group 1 - The stock price of Tunnel Corporation (600820) closed at 6.68 yuan, down 0.6%, with a turnover rate of 0.92% and a trading volume of 288,800 hands, amounting to 193 million yuan [1] - The latest financial report for the first quarter of 2025 shows total revenue of 10.549 billion yuan, a year-on-year decrease of 25.33%, and a net profit attributable to shareholders of 330 million yuan, also down 25.38% [1] - The company has a current ratio of 0.904, a quick ratio of 0.891, and a debt-to-asset ratio of 75.75% [1] Group 2 - Tunnel Corporation has made investments in 35 companies and participated in 757 bidding projects [2] - The company holds 8 trademark registrations and 266 patents, along with 140 administrative licenses [2]