January 27th Update: On January 27th, the quoted price for industrial-grade sodium metabisulfite (96.5% purity) in the Shanghai market was 2,300 RMB per ton, representing an increase of 50 RMB per ton. Inventory levels are approximately 20%. Chempricehub Analysis: The quoted price for industrial-grade sodium metabisulfite in the Shanghai market rose by 50 RMB per ton to 2,300 RMB per ton, with inventory levels at only around 20%, indicating tight supply and increased demand, which supports the rise in spot prices. The low inventory level reflects an imbalance between market supply and demand, potentially driving prices higher in the short term, which is favorable for the spot market.