The project of "Section IV of Reservoir Protection Project of Datengxia Water Control Project" undertaken by the Company, Anti-seepage curtain (divided into east and west curtains) is the longest mine curtain under construction in China with the largest investment. Since 2016, the Company has provided a complete set of services including survey and design, grouting test and technical consultation. At present, the east curtain has been successfully implemented and the water shutoff effect is remarkable.