May 21 News — On May 21, driven by increased market demand and rising raw material costs, the quote price of industrial grade sodium metabisulfite (96.5% purity) in the Shanghai market stood at 4,100 CNY/ton, up 200 CNY/ton, with inventory accounting for approximately 20% of capacity. Chempricehub evaluates sodium metabisulfite with a bullish/bearish rating of 1. Supported by the dual positive factors of growing market demand and rising raw material prices, the quote price of industrial grade 96.5% sodium metabisulfite in the Shanghai market was raised by 200 CNY/ton to 4,100 CNY/ton on May 21. Current inventory accounts for only 20% of capacity, indicating a relatively tight supply-demand balance, which provides a notable favorable support for its spot price.