On May 14, the food-grade sodium metabisulfite (content 96.5%) was quoted at 4,200 yuan/ton in the Hunan market, up 200 yuan/ton, with prices continuing to rise due to increased raw material costs and growing demand. Chempricehub's assessment of sodium metabisulfite gives a bullish-bearish score of 1. Supported by dual favorable factors of rising raw material costs and increased downstream demand, the spot price in the Hunan market for food-grade sodium metabisulfite (content 96.5%) rose by 200 yuan/ton to 4,200 yuan/ton on May 14, indicating a strong price trend and providing a positive boost to the market.