权益变动比例触及 1%整数倍的公告 本公司及董事会全体成员保证信息披露内容的真实、准确和完整，没有虚假记载、 误导性陈述或重大遗漏。 证券代码：300690 证券简称：双一科技 公告编号：2025-039 山东双一科技股份有限公司 关于公司控股股东及其一致行动人 本公司及董事会全体成员保证公告内容与信息披露义务人提供的信息一致。 山东双一科技股份有限公司（以下简称"公司"）于 2024 年 6 月 17 日在巨潮资讯网披 露的《关于公司实际控制人之一致行动人一致行动关系解除暨权益变动的提示性公告》（公 告编号：2024-031）； 2024 年 8 月 19 日在巨潮资讯网披露了《关于控股股东、实际控制人减持股份的预披 露公告》（公告编号：2024-0039），控股股东王庆华先生拟以大宗交易的方式减持公司股 份 2,000,000 股，截至 2024 年 10 月 23 日，王庆华先生以大宗交易方式减持公司股份 1,292,500 股。2024 年 10 月 25 日，公司在巨潮资讯网披露了《关于公司控股股东及一致行 动人减持股份比例达到 1%的公告》（公告编号：2024-043）； 2024 年 12 月 ...

Group 1: Marine Economy Development - Shandong is implementing the "Ten Actions" to enhance marine economic competitiveness, with Dezhou focusing on marine equipment manufacturing, marine biomedicine, and marine tourism [1] - Dezhou enterprises are actively engaging in marine sectors, with significant advancements in marine oil and gas exploration technologies [5][6] Group 2: Marine Equipment Manufacturing - Hengli Electric, a leading manufacturer of marine electric motors, has a market share exceeding 75% in China and is expanding into offshore wind power [2][3] - Baoding Heavy Industry has developed the world's largest G95 engine crankshaft component, gaining recognition from global engine giants [3][4] - Baoding Heavy Industry has established itself as a key supplier in the shipbuilding industry, delivering over 200,000 tons of heavy ship components [4] Group 3: Marine Biotechnology - Shandong Yuwang Pharmaceutical has developed advanced fish oil processing technologies, producing 20,000 tons of fish oil annually, with products exported to over 80 countries [8][9] - Weir Bio-Tech is set to launch a project producing 100 tons of polylysine, a natural biopreservative, expected to generate significant revenue [9] Group 4: Marine Tourism - Dezhou has seen growth in marine tourism, with attractions like the Ocean Polar World and the Dezhou Ocean Museum drawing significant visitor numbers [10]

Group 1 - The PEEK materials concept increased by 0.80%, ranking second in the concept sector, with 21 stocks rising, including Huami New Materials, Weike Technology, and Shuangyi Technology, which rose by 9.83%, 8.72%, and 8.45% respectively [1][2] - The concept sector saw a net outflow of 1.11 billion yuan, with 13 stocks experiencing net inflows, and 7 stocks receiving over 30 million yuan in net inflows, led by Shuangyi Technology with a net inflow of 90.83 million yuan [2][3] - The top three stocks by net inflow ratio were Meihua Medical, Shuangyi Technology, and Weike Technology, with net inflow ratios of 8.22%, 7.51%, and 7.43% respectively [3] Group 2 - The PEEK materials concept was among the top gainers, while other concepts like F5G and WiFi 6 experienced declines of -5.20% and -5.15% respectively [2] - The stocks with the largest declines included China Jushi, Shengbang Co., and Huitong Co., which fell by 7.48%, 5.14%, and 3.52% respectively [1][5] - The trading volume and turnover rates for leading stocks in the PEEK materials concept were significant, with Shuangyi Technology having a turnover rate of 28.81% and Weike Technology at 13.01% [3][4]

Group 1 - Huami New Materials surged over 13% [1] - Weike Technology increased by more than 10% [1] - Ningbo Huaxiang and Chaojie Co. both rose over 8% [1] - Shuangyi Technology, Mingyang Technology, and Yokogawa Precision also experienced gains [1]

Group 1 - The PEEK material concept stocks have surged, with Ningbo Huaxiang hitting the daily limit up [1] - Huami New Materials and Weike Technology have increased by over 10% [1] - Other companies such as Shuangyi Technology, Xinhan New Materials, and Zhongyan Co., Ltd. have also seen gains [1]

Core Viewpoint - The stock of Shuangyi Technology has shown significant growth this year, with a year-to-date increase of 63.26%, despite a recent decline in the last five trading days [2] Group 1: Stock Performance - As of August 29, Shuangyi Technology's stock price rose by 2.01% to 36.57 CNY per share, with a trading volume of 1.89 billion CNY and a turnover rate of 4.74%, resulting in a total market capitalization of 6.047 billion CNY [1] - The stock has experienced a 2.06% decline over the last five trading days, but has increased by 47.70% over the past 20 days and 60.18% over the past 60 days [2] - The company has appeared on the "Dragon and Tiger List" four times this year, with the most recent appearance on August 15, where it recorded a net purchase of 271 million CNY [2] Group 2: Financial Performance - For the first half of 2025, Shuangyi Technology achieved a revenue of 525 million CNY, representing a year-on-year growth of 44.57%, and a net profit attributable to shareholders of 99.87 million CNY, which is a 324.50% increase year-on-year [2] - The company has distributed a total of 452 million CNY in dividends since its A-share listing, with 94.25 million CNY distributed over the last three years [3] Group 3: Business Overview - Shuangyi Technology, established on March 6, 2000, and listed on August 8, 2017, is located in Dezhou, Shandong Province, and specializes in the research, design, production, sales, and service of composite material products [2] - The company's main business revenue composition includes wind power components (43.25%), non-metal molds (39.89%), vehicle covers (14.39%), yachts (1.51%), and others (0.97%) [2] - The company is classified under the wind power equipment sector and is associated with concepts such as PEEK, 3D printing, small-cap stocks, flying cars, and new energy vehicles [2]

Market Performance - On August 28, the wind power equipment sector rose by 1.58%, with Electric Wind Power leading the gains [1] - The Shanghai Composite Index closed at 3843.6, up 1.14%, while the Shenzhen Component Index closed at 12571.37, up 2.25% [1] Stock Performance - Electric Wind Power (688660) closed at 25.56, up 14.46%, with a trading volume of 943,800 shares and a transaction value of 2.304 billion [1] - Other notable performers included Zhonghuan Hailu (301040) at 39.60, up 12.66%, and He Wang Electric (603063) at 37.78, up 6.51% [1] - Conversely, Mingyang Smart Energy (601615) fell by 4.17% to 12.18, with a trading volume of 944,800 shares and a transaction value of 1.148 billion [2] Capital Flow - The wind power equipment sector experienced a net outflow of 429 million from institutional investors, while retail investors saw a net inflow of 400 million [2] - The table of capital flow indicates that He Wang Electric had a net inflow of 1.956 million from institutional investors, while Electric Wind Power had a net outflow of 2.302 million [3] Individual Stock Analysis - He Wang Electric (603063) had a net outflow of 1.956 million from institutional investors, with a retail net inflow of 1.255 million [3] - Electric Wind Power (688660) saw a net outflow of 2.302 million from institutional investors, with a retail net inflow of 203.85 million [3] - Overall, the capital flow data suggests varying levels of investor interest across different stocks within the wind power equipment sector [3]

Group 1: Chemical Sector Performance - The chemical index experienced a significant increase, with the chemical raw materials index rising by 2.81%, the chemical machinery index by 1.53%, the chemical pharmaceuticals index by 3.70%, and the pesticide and fertilizer index by 1.03% [1] - In contrast, the oil index saw a decline across all categories, with the oil processing index down by 1.10%, the oil extraction index down by 1.22%, and the oil trading index down by 1.02% [1] Group 2: Oil Prices - International crude oil prices showed weakness, with the WTI crude oil futures settling at $62.80 per barrel, a decrease of 1.69% from August 8, and Brent crude oil futures settling at $65.85 per barrel, down by 1.11% [1] Group 3: Petrochemical Product Price Changes - The top five petrochemical products with price increases included liquid chlorine up by 29.05%, battery-grade lithium carbonate up by 18.57%, industrial-grade lithium carbonate up by 14.53%, folic acid up by 6.38%, and niacinamide up by 5.00% [1] - Conversely, the top five petrochemical products with price declines included butanone down by 8.91%, organic silicon DMC down by 8%, organic silicon D4 down by 7.69%, raw rubber down by 7.41%, and synthetic ammonia down by 6.95% [1] Group 4: Capital Market Performance of Chemical Companies - The top five listed chemical companies with the highest stock price increases were Shuangyi Technology up by 41.17%, Kaimete Gas up by 34.73%, Honghe Technology up by 33.09%, Weike Technology up by 31.54%, and Xinhang New Materials up by 31.43% [2] - The bottom five listed chemical companies with the largest stock price declines were Zhizheng Co. down by 13.04%, Donghua Energy down by 11.49%, Renzhi Co. down by 10%, Fengshan Group down by 8.51%, and Hehua Co. down by 8.20% [2]

Market Overview - The wind power equipment sector experienced a decline of 1.12% on August 21, with Shuangyi Technology leading the drop [1] - The Shanghai Composite Index closed at 3771.1, up 0.13%, while the Shenzhen Component Index closed at 11919.76, down 0.06% [1] Stock Performance - Notable gainers in the wind power equipment sector included Zhonghuan Hailu, which rose by 8.65% to a closing price of 31.78, with a trading volume of 106,400 shares and a transaction value of 335 million yuan [1] - Other stocks such as Tianneng Heavy Industry and Guangda Special Materials saw minor increases of 0.88% and 0.19%, respectively [1] - Conversely, Shuangyi Technology fell by 4.48% to 37.28, with a trading volume of 184,200 shares and a transaction value of 688 million yuan, marking the largest decline in the sector [2] Capital Flow - The wind power equipment sector saw a net outflow of 447 million yuan from institutional investors, while retail investors contributed a net inflow of 346 million yuan [2] - The overall capital flow indicates a mixed sentiment, with retail investors showing interest despite the institutional outflow [2] Individual Stock Capital Flow - Jinlei Co. experienced a net inflow of 31.97 million yuan from institutional investors, while it faced outflows from both retail and speculative investors [3] - Guangda Special Materials also saw a net inflow of 21.68 million yuan from institutional investors, indicating some level of confidence in its performance [3] - Electric Wind Power had a net inflow of 18.23 million yuan from institutional investors, while retail investors showed a significant outflow [3]

Group 1: Chemical Sector Performance - The chemical index experienced an overall increase, with the chemical raw materials index rising by 2.81%, the chemical machinery index by 1.53%, the chemical pharmaceuticals index by 3.70%, and the pesticide and fertilizer index by 1.03% [1] - In contrast, the oil index saw a decline across all categories, with the oil processing index down by 1.10%, the oil extraction index down by 1.22%, and the oil trading index down by 1.02% [1] Group 2: Oil Price Trends - International crude oil prices showed weak fluctuations, with the WTI crude oil futures settling at $62.80 per barrel, a decrease of 1.69% from August 8, and Brent crude oil futures settling at $65.85 per barrel, down by 1.11% [1] Group 3: Petrochemical Product Price Changes - The top five petrochemical products with price increases included liquid chlorine up by 29.05%, battery-grade lithium carbonate up by 18.57%, industrial-grade lithium carbonate up by 14.53%, folic acid up by 6.38%, and niacinamide up by 5.00% [1] - Conversely, the top five petrochemical products with price declines included butanone down by 8.91%, organic silicon DMC down by 8%, organic silicon D4 down by 7.69%, raw rubber down by 7.41%, and synthetic ammonia down by 6.95% [1] Group 4: Capital Market Performance of Chemical Companies - The top five listed chemical companies with the highest stock price increases were Shuangyi Technology up by 41.17%, Kaimete Gas up by 34.73%, Honghe Technology up by 33.09%, Weike Technology up by 31.54%, and Xinhang New Materials up by 31.43% [2] - The bottom five listed chemical companies with the largest stock price declines were Zhizheng Co. down by 13.04%, Donghua Energy down by 11.49%, Renzhi Co. down by 10%, Fengshan Group down by 8.51%, and Hehua Co. down by 8.20% [2]