On August 26th, Ding Qiong, a first level inspector and deputy director of the Solid State Department of the Ministry of Ecology and Environment, went to Hebei Province to investigate the progress of new pollutant control work. Gao Peng, Senior Engineer of the External Cooperation and Exchange Center, Yu Fang, Chief Scientist of the Ecological Environment Planning Institute, Yu Xiangyi, Senior Engineer of the Solid Management Center, and Wang Li, Director of the Research Department of CCAIA, participated in the research. The research team learned about the whole picture of Shijiazhuang Economic and Technological Development Zone and the progress of the pilot project of new pollutant research in Hebei Province. We conducted research and visited Dongxiang Chemical Co., Ltd. in Shijiazhuang to understand the production and sales of medium chain chlorinated paraffin and the procurement of raw material liquid wax.