December 21, 2023, in Shandong Province, key monitoring enterprises self-monitoring information public platform shows that Qingzhou City ** Sewage Purification Co. Ltd. total discharge Total nitrogen 12/17, 12/18 suspected exceeded the emission standards. PECC reflected the situation to the local environmental protection bureau through 12369 and Weibo, see below:

February 7, 2024 received feedback from the local environmental protection bureau: it has opened a case to investigate the problem of exceeding the standard, and issued a Decision on Non-Administrative Penalty for Minor Violations in accordance with the law.