Core Viewpoint - The transformation of Yongfeng County's limestone mining industry from low-value raw material extraction to high-end manufacturing of nano-calcium carbonate has created a billion-dollar industry, showcasing significant advancements in technology and sustainability [1][2][3]. Group 1: Industry Transformation - Yongfeng County has a limestone reserve of 11 billion tons, ranking third in the country for calcium carbonate content, with a high whiteness and low iron content [2]. - Before 2008, the county's mining operations were characterized by disorganized small-scale enterprises with a resource utilization rate of less than 50% [2]. - The introduction of policies in 2008 led to the closure of over 50 illegal mines and the elimination of more than 100 outdated production facilities, increasing resource utilization to 90% [2][3]. Group 2: Technological Advancements - The establishment of a carbon calcium industry research institute in 2024 has fostered collaboration between enterprises and over 20 research institutions, enhancing innovation [3]. - Companies like Jiangxi Guangyuan Chemical have developed intelligent production lines that reduce dust emissions by 60% compared to traditional methods [3]. - The county has seen 127 patents granted and a technology investment ratio exceeding 8%, significantly higher than traditional manufacturing [3]. Group 3: Supply Chain Development - The establishment of a complete industrial chain in Yongfeng allows for local procurement of 90% of raw materials, reducing costs by over 20% [4][5]. - Jiangxi Guangyuan Chemical, as a leading enterprise, has attracted over 50 supporting companies to the region, enhancing the local economy [5]. Group 4: Environmental Sustainability - The implementation of a wastewater recycling system has achieved a 95% reuse rate, and dust collection efficiency has improved by 40% [6]. - The county has adopted a "smart mining" system for real-time monitoring of extraction and environmental indicators, contributing to its recognition as a national base for comprehensive solid waste utilization [6].