From March 18th to 21st, the CCAIA and Zhengzhou Commodity Exchange conducted on-site research activities in Tianjin and Hebei regions. Zheng Jiebin, Vice Secretary General of the association, Wang Li, Director of the Industry Research Department, and Jin Lu and Yang Hao, Senior Managers of the Commodity Department Ⅲ of Zhengzhou Commodity Exchange, participated in the research. The research team visited chlor-alkali producers such as Tianjin Bohua Chemical Development, Lotte Chemical Tianjin, Tangshan Sanyou Chlor Alkali, Cangzhou Julong and downstream manufacturers such as Tangshan Sanyou Chemical Fiber, MCC Ramu and Hebei Wenfeng, as well as traders such as Tangshan Chenyue Chemical and Hebei Yongxing Chemical, and had full exchanges with the Fengnan Development Zone Management Committee and Lingang Development Zone Management Committee. The research team gained a detailed understanding of the supply and demand situation, warehousing and logistics status, and future development trends of the caustic soda market in Tianjin and Hebei regions. They conducted in-depth exchanges and discussions on the delivery system details such as caustic soda futures delivery regions and premium margins, and listened to the opinions and suggestions of relevant parties.