从雨虹小哥到绿茵场，东方雨虹向善马拉松跑出品牌担当

Group 1 - The core message of the articles highlights the commitment of Dongfang Yuhong, a Chinese building materials company, to address the issue of leakage in old residential buildings, which affects 30% of such structures in China, through a long-term public welfare initiative [1][3] - Since 2006, Dongfang Yuhong has been actively involved in a public welfare campaign titled "Serving the Public, Rejecting Leakage," which has evolved over 19 years into a professional team providing training and certification for engineers to combat regional leakage issues [1][3] - The company has provided free repairs to nearly 600 special households and conducted 140,000 free consultations, emphasizing that leakage is a social issue rather than merely a technical one [3] Group 2 - Dongfang Yuhong's commitment to sustainability is evident through its investments in green production technologies, such as RTO rotary smoke treatment equipment and rooftop photovoltaic power stations, which have contributed to its AA-level ESG rating, the highest recognition in the building materials industry [3][5] - The company has demonstrated that addressing social pain points can serve as a foundation for innovation, leading to the natural growth of commercial value [5]