On January 16, the yellow phosphorus plant of Qujing Jiuan Economic and Trade Co., Ltd. was shut down. PriceSeek's analysis of yellow phosphorus, with a bullish-bearish score: 1. The shutdown of the yellow phosphorus plant at Qujing Jiuan Economic and Trade Co., Ltd. has led to a reduction in yellow phosphorus supply. Given relatively stable demand, the supply shortage is expected to drive up spot prices. Although this event is the action of a single company, it may trigger market concerns about supply tightness, providing favorable support. Therefore, a general bullish score of +1 is assigned.