April 28 - On April 28, driven by increased market demand and rising raw material prices, the price of industrial-grade sodium metabisulfite (purity 96.5%) in the Shanghai market was quoted at 4,100 yuan/ton, up 300 yuan/ton, with inventory at around 20%. Chempricehub comments on sodium metabisulfite: bull/bear rating: +2.0. Spot prices of industrial-grade sodium metabisulfite in the Shanghai market rose sharply by 300 yuan/ton to 4,100 yuan/ton, driven by increased market demand and rising raw material prices. Inventory at only about 20% indicates tight supply. The combination of demand growth and cost increases has strengthened the momentum of spot price increases, which may continue to strengthen in the short term. The rating is +2.0, indicating a major positive.