中化岩土：子公司中标6239.55万元上海机场飞行区基础设施维修框架（附属设施维修）项目

Group 1 - The core point of the article is that Zhonghua Rock and Soil (002542.SZ) announced that its wholly-owned subsidiary, Beijing Changdao Municipal Engineering Group Co., Ltd., has recently received a bid notification from Shanghai Airport (Group) Co., Ltd. for a project related to the maintenance of flight area infrastructure, with a winning bid amount of 62.3955 million yuan [1]