Group 1 - Beijing Construction Environment Restoration Co., Ltd. signed a strategic cooperation agreement with the Dongchuan District government to promote sustainable development in the region [1][2] - The cooperation will focus on comprehensive utilization of phosphogypsum waste, prevention of soil heavy metal pollution, ecological restoration of abandoned mines, and comprehensive land remediation [1][2] - Dongchuan District is a key area in Kunming's "three-year action plan for comprehensive utilization of phosphogypsum," highlighting the significance of this partnership in addressing phosphogypsum treatment challenges [1][2] Group 2 - The company has successfully undertaken several representative soil pollution and ecological restoration projects in Yunnan, including the first industrial site restoration project in the province and the largest mercury pollution restoration project internationally [2] - The company aims to explore new paths and models for phosphogypsum comprehensive utilization through this cooperation, establishing a model for government-enterprise collaboration [2]