Core Insights - The 2025 Yangtze River Delta Engineering and Materials Conference was successfully held in Hangzhou, Zhejiang, focusing on innovation and development in the engineering and materials sector, providing a high-end platform for industry collaboration and showcasing the launch of the Chain Cloud Sandstone product [1][8] - The launch of the Chain Cloud Sandstone platform marks a significant step towards the digital transformation of the sand and stone industry, moving towards a fully digital supply chain and intelligent demand-supply matching [3][6] Group 1 - The Chain Cloud Sandstone platform's online sales capabilities were tested for the first time, achieving a record of 940,000 tons in online payment intentions, demonstrating a revolutionary change in traditional sales models [6] - The efficiency of the platform was highlighted by completing a month's worth of sales in just 5 minutes, addressing issues of information asymmetry and low circulation efficiency in traditional sand and stone transactions [6] - A strategic cooperation agreement was signed between Zhihua Group and Zhejiang Provincial Building Materials Group, focusing on creating a comprehensive digital platform integrating procurement, logistics, and supply chain management [6][8] Group 2 - The successful hosting of the conference and the launch of the Chain Cloud Sandstone platform provide new ideas and pathways for the high-quality development of the sand and stone industry in the Yangtze River Delta and nationwide [8] - Zhihua Chain Cloud aims to deepen technological innovation and industry collaboration, assisting more enterprises in achieving digital transformation and building an efficient, transparent, and trustworthy new ecosystem for the sand and stone industry [8]