Group 1: Research Basic Information - The research object is Wodun Technology, belonging to the environmental protection industry, with a reception time of September 4, 2025. The listed company's reception staff includes Chairman Cai Zhiqi, General Manager Jin Yan, Deputy General Manager, Financial Controller, and General Counsel Zheng Wei, Independent Director Wang Liming, and Board Secretary Zhao Feng [16] Group 2: Detailed Research Institutions - The reception object is investors participating in Wodun Technology's 2025 semi - annual online performance briefing, and the reception object type is "others" [19] Group 3: Main Content Information - The company's R & D expenses in the first half of the year were 46.7002 million yuan. It has launched products such as high - salt wastewater membranes, enhanced anti - pollution membranes, and high - boron - rejection seawater desalination membranes, and the products have shown good performance [23] - The company's membrane technology is a mature application in the steel and coal chemical industries, and the overall application volume in the first half of the year was normal [23] - The company is leading the formulation of the "Reverse Osmosis Membrane for Semiconductor Ultrapure Water Preparation" group standard. Ultrapure water is a high - margin business with high entry barriers, and the company will strive to expand in this field [23][24] - The company's MASE special separation nanofiltration membrane product line and multi - membrane coupling separation and purification technology have been successfully applied in multiple salt lake lithium extraction projects, contributing to the company's performance [24] - The decrease in the company's current liabilities compared to the beginning of the period is mainly due to the reduction in the amount that needs to be restored for endorsed and undated bank acceptance bills according to accounting standards [24] - The company's production capacity utilization rate in the first half of the year was 104.02%, and the current production capacity can meet market demand [24] - As of now, the company has not received information from its second - largest shareholder, Guoneng Longyuan Environmental Protection Co., Ltd., regarding its intention to reduce its holdings [24] - The company will adopt a reasonable pricing strategy based on market supply - demand relationships and its own cost situation [25]

答：超纯水系高毛利业务，但进入门槛较高，公司将持续努力，力争拓展 在该领域的发展。 4、问：盐湖提锂用膜产品实现镁截留率 95% 以上，该技术在上半年的实 际应用规模有多大？是否已形成稳定的盈利贡献？ 答：您好！公司在盐湖提锂领域构建不同选择性分离性能的 MASE 特种分离 纳滤膜产品线和多膜耦合分离纯化技术，该类产品和技术目前已经成功应 用于青海汇信 20000 吨/年等多个盐湖提锂项目中。上述产品和技术为公司 在特种分离膜及膜分离工程业务提供了产品和技术支撑，同时为公司的经 营业绩和效益做出了贡献。谢谢您的关注。 5、问：报告显示公司的流动负债较期初下降约 19.5%，请问主要得益于合 同负债增长还是短期借款减少？ 证券代码：000920 证券简称：沃顿科技 沃顿科技股份有限公司投资者关系活动记录表 编号：202510 | 投资者关 | □特定对象调研 □分析师会议 | | --- | --- | | 系活动类 | □媒体采访 业绩说明会 ☑ | | 别 | □新闻发布会 □路演活动 | | | □现场参观 | | | □其他 | | 参与单位 | 参与沃顿科技 2025 年半年度线上业绩说明会的投资者 ...