Some prices in the sulfuric acid market in Yunnan have been increased. As of now, the factory price of 98% of smelted acid in the Yunnan market is 450-540 yuan/ton. The downstream demand in the zone is basically stable, the new production capacity of the main acid plants has not been released yet, and the spot resources of sulfuric acid in the zone are tight. Coupled with the possibility of inspection of storage and equipment in individual acid factories in the later period, it is planned to increase the acid price by 30 yuan/ton tomorrow. Other acid factories in the region will temporarily wait and see, but the overall downstream demand is still weakening, and the mood of the supply and demand game in the region is obvious.