On January 16, Yunnan Huaye Phosphorus Chemical's yellow phosphorus unit underwent shutdown for maintenance. PriceSeek Analysis of Yellow Phosphorus, Bull-Bear Score: 1.5. The shutdown of Yunnan Huaye Phosphorus Chemical's yellow phosphorus unit for maintenance has led to a reduction in supply, which is expected to drive up the spot price of yellow phosphorus. This event directly reduces short-term market supply, creating a favorable situation under stable demand conditions. Although the maintenance is temporary, Yunnan, as a key production region for phosphorus chemicals, may amplify upward price pressure due to localized supply contraction. The score is based on a moderately strong positive impact of the supply disruption on the spot market.