On May 9, the FOB export transaction price of caustic soda in East China was in the range of $340-350/mt. In Northeast Asia, the transaction price of liquid caustic soda stood at $330-350/mt. According to Chempricehub's analysis of caustic soda, the bull/bear rating is 1. On the spot side, as of May 9, the FOB export transaction price of caustic soda in East China was $340-350/mt, and the transaction price of liquid caustic soda in Northeast Asia was $330-350/mt. Export prices showed a relatively strong trend, with robust external demand providing clear support for domestic caustic soda spot prices. On the futures side, the settlement price of the main caustic soda contract (2607) on the Zhengzhou Commodity Exchange on May 8, 2026, was CNY 2,107/mt. The daily trading volume was 550,400 lots, and open interest was 226,600 lots, an increase of 13,645 lots from the previous trading day. Market capital attention was relatively high, and the positive factors from strong exports exerted an upward pull on caustic soda futures prices. Overall, this is considered a moderately positive development.