On January 10, 2022, the public platform of self-monitoring information of Shaanxi Province sewage units showed that Baoji xxx Environmental Protection Equipment Co. total nitrogen was suspected to be discharged in excess of the standard from 2021.12.29 to 2021.12.30. PECC reflected the situation to the local environmental protection bureau through 12369 and Weibo, as detailed in the following chart:

January 28, 2022 received feedback from the local environmental protection bureau: for the enterprise exceeded the standard behavior has been investigated and verified, and require enterprises to carry out rectification, strengthen management, to ensure that the normal operation of the pollution prevention and control measures to achieve water quality standards.