德龙激光（688170）7月31日主力资金净流出1636.11万元

Group 1 - The core viewpoint of the news is that Delong Laser (688170) has experienced a stock price increase of 6.46% as of July 31, 2025, closing at 39.58 yuan, despite facing a decline in revenue and net profit in its latest quarterly report [1] - The company reported total revenue of 99.1651 million yuan for Q1 2025, a year-on-year decrease of 14.26%, and a net profit attributable to shareholders of 16.4704 million yuan, down 126.76% year-on-year [1] - The company's liquidity ratios are strong, with a current ratio of 2.557 and a quick ratio of 1.512, while the debt-to-asset ratio stands at 31.66% [1] Group 2 - Delong Laser has made investments in 11 companies and participated in 293 bidding projects, indicating active engagement in business expansion [2] - The company holds 16 trademark registrations and 583 patents, showcasing its focus on intellectual property and innovation [2] - Delong Laser has obtained 5 administrative licenses, reflecting its compliance with regulatory requirements [2]