On January 6, the quotation for industrial-grade sodium metabisulfite (content 96.5%) in the Shanghai market was 2,200 yuan/ton, with a price increase of 50 yuan/ton, and inventory accounted for about 20%. PriceSeek analyzed sodium metabisulfite, with a long-short score: 1.5. According to the article, on January 6, the quotation for industrial-grade sodium metabisulfite (content 96.5%) in the Shanghai market rose by 50 yuan/ton to 2,200 yuan/ton, an increase of about 2.27%, while inventory accounted for only about 20%. The price increase directly reflects tight market supply and increased demand, and low inventory further supports the upward trend of spot prices, indicating a short-term supply-demand imbalance. 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, no major policies or events are involved, so it does not reach the level of a major positive.