On September 9, 2019, Shandong XX Iron and Steel Co., Ltd., an enterprise self-monitoring platform in Shandong Province, discharged nitrogen oxide pollutants exceeding the standard. Lvse Jiangnan reminded the local environmental protection bureau of the situation through 12369 and microblog. See the picture below for details:

On October 18, 2019, the reply from the Environmental Protection Bureau was received: on October 12, 2019, the company filed a case to investigate and deal with the excessive discharge of pollutants.