*ST建艺上半年营收19.58亿元同比降28.37%，归母净利润-1.88亿元同比降3486.81%，毛利率下降8.91个百分点

Group 1 - The core viewpoint of the article highlights the significant decline in *ST Jianyi's financial performance for the first half of 2025, with a notable drop in revenue and net profit [1][2] - The company's operating revenue for the first half of 2025 was 1.958 billion yuan, a year-on-year decrease of 28.37% [1] - The net profit attributable to shareholders was -188 million yuan, a staggering year-on-year decline of 3486.81% [1] Group 2 - The basic earnings per share for the reporting period was -1.18 yuan, with a current price-to-earnings ratio (TTM) of approximately -1.60 times [2] - The gross profit margin for the first half of 2025 was 4.92%, down 8.91 percentage points year-on-year, while the net profit margin was -10.13%, a decrease of 11.35 percentage points compared to the previous year [2] - The company’s total number of shareholders decreased to 9,078, a drop of 48.81% from the previous quarter, while the average market value per shareholder increased by 138.76% [2] Group 3 - *ST Jianyi, established on January 3, 1994, is primarily engaged in construction decoration and design, with its main business revenue composition being 73.77% from construction projects and 19.23% from decoration projects [3] - The company is categorized under the construction decoration industry and is associated with concepts such as delisting warnings, small-cap stocks, solar energy, and venture capital [3]