January 6th Update: On January 6th, the quoted price for industrial-grade sodium metabisulfite (96.5% purity) in the Shanghai market was 2,200 RMB/ton, representing an increase of 50 RMB/ton. Inventory levels are approximately at 20%. According to Chempricehub's analysis of sodium metabisulfite, the bullish-bearish score is +1.5. Based on the article content, on January 6th, the quoted price for industrial-grade sodium metabisulfite (96.5% purity) in the Shanghai market rose by 50 RMB/ton to 2,200 RMB/ton, an increase of approximately 2.27%. Concurrently, inventory levels are only around 20%. The price increase directly reflects tight market supply and strengthening demand, while low inventory further supports the upward trend in spot prices, indicating short-term supply-demand tightness. This constitutes a positive signal, with a score of +1.5 (relatively strong positive). Reasons include: the price increase is significant and inventory levels are low, suggesting that spot prices may continue to rise moderately in the short term. However, as no major policies or events are involved, it does not reach the level of a major positive factor.