On February 6, the flake caustic soda market in South China experienced sluggish trading activity, with current local market transaction prices hovering around 3,100–3,200 yuan per ton. Downstream buyers are primarily purchasing based on immediate needs. PriceSeek analysis of caustic soda, with a long-short score of -1, indicates that the weak trading atmosphere and actual transaction prices in the South China flake caustic soda market, coupled with downstream procurement on a demand-driven basis, reflect soft demand, exerting downward pressure on spot prices. Considering recent futures contract data for caustic soda (e.g., the settlement price of the 2603 contract at 1,943 yuan per ton, down by 21 yuan), the weakness in the spot market may reinforce expectations of a decline in futures prices, with short-term prices expected to remain weak. The score of -1 (generally bearish) is attributed to price pressure from insufficient demand, though no significant supply-demand imbalance events have occurred.