According to the latest data from China's National Bureau of Statistics, the country's caustic soda production (calculated at 100% purity) reached 4.012 million tons in November 2025, marking a year-on-year increase of 4.6%. From January to November 2025, total caustic soda production (calculated at 100% purity) amounted to 42.326 million tons, up 4.8% compared to the same period last year.

Upstream, China's raw salt production in November reached 4.649 million tons, down 2.7% year-on-year. From January to November, raw salt production totaled 56.059 million tons, up 0.5% year-on-year.

Downstream, China's alumina production in November was 8.138 million tons, up 7.6% year-on-year. From January to November, alumina production reached 84.657 million tons, up 8.4% year-on-year. In November, China's production of machine-made paper and paperboard (excluding processing of externally purchased base paper) reached 14.588 million tons, up 5.3% year-on-year. From January to November, production totaled 148.871 million tons, increasing by 2.8% year-on-year. In November, China's fabric output reached 2.81 billion meters, down 0.7% year-on-year. From January to November, fabric output totaled 27.83 billion meters, down 0.6% year-on-year. In November, China's synthetic detergent output was 1.099 million tons, down 2.0% year-on-year. From January to November, synthetic detergent output reached 10.891 million tons, down 0.6% year-on-year.

As an integrated internet platform providing benchmark prices, on December 22nd, SunSirs benchmark price for caustic soda was 746.00 RMB/ton, a decrease of 4.36% compared to the beginning of the month (780.00 RMB/ton).

Application of SunSirs Benchmark Pricing：

Traders can price spot and contract transactions based on the pricing principle of agreed markup and pricing formula (Transaction price=SunSirs price + Markup).

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