On May 27, 2021, the data on the Shaanxi Provincial Emission Permit Enterprise Monitoring Information Release Platform showed that Baoji xx Wastewater Treatment Co. Water Chemical Oxygen Demand (COD) exceeded the emission standards, and PECC reflected the situation to the local environmental protection bureau through 12369 and microblogging, as shown in the following figure:

June 8, 2021 received the local environmental protection bureau investigation response: Hello! In response to the company's chemical oxygen demand emissions exceeding the environmental problems, has been filed for investigation, is currently being processed. The next step will continue to strengthen supervision, to ensure that pollution control facilities, automatic online testing facilities are operating normally, all kinds of pollutants long-term stable emission standards.