On August 9, 2021, Shandong Province key monitoring enterprises self-monitoring information public platform shows that xxx building materials limited company No. 1 lime kiln COD on August 1, August 3, August 8, 2021 suspected emissions exceeded the standard. PECC reflected the situation to the local environmental protection bureau through 12369 and Weibo, see below:

On September 3, 2021, a specific reply was received from the Letters and Visits Section of the Rizhao City Ecological and Environmental Bureau, Juxian County Branch: In response to the enterprise's exceeding of the standard, a case has been initiated for investigation.