科隆股份（300405）7月29日主力资金净流出1919.83万元

Group 1 - The core viewpoint of the news indicates that Kolong Co., Ltd. (科隆股份) has experienced a significant decline in both revenue and net profit in the latest quarterly report, reflecting challenges in its financial performance [1] - As of July 29, 2025, Kolong Co., Ltd. reported a closing price of 6.48 yuan, down 2.11%, with a turnover rate of 10.44% and a trading volume of 228,500 hands, amounting to a transaction value of 148 million yuan [1] - The company's latest quarterly financial results show total operating revenue of 90.70 million yuan, a year-on-year decrease of 34.80%, and a net profit attributable to shareholders of 15.48 million yuan, down 71.44% year-on-year [1] Group 2 - The company has a current ratio of 1.057, a quick ratio of 0.743, and a debt-to-asset ratio of 57.11%, indicating its liquidity and financial leverage [1] - Kolong Co., Ltd. has made investments in 12 external enterprises and participated in 190 bidding projects, showcasing its engagement in business expansion [2] - The company holds 4 trademark registrations and 47 patents, along with 112 administrative licenses, reflecting its commitment to intellectual property and regulatory compliance [2]