On February 9, the 50,000-ton/year acetone-based isopropanol unit of Zhuhai Changcheng was shut down, with the specific restart time yet to be determined. PriceSeek's analysis of isopropanol shows a bullish-bearish score of 1. The shutdown of Zhuhai Changcheng's 50,000-ton/year unit has led to a reduction in supply, and the uncertainty surrounding the restart time may push up spot prices. The supply disruption provides short-term support to the market, but attention should be paid to the progress of subsequent restarts. For acetone, the bullish-bearish score is -1. As a raw material for isopropanol production, the unit shutdown reduces acetone demand, potentially lowering spot prices. The weakening demand poses a bearish factor for the market, but the extent of the impact depends on demand changes in other downstream industries.