This week, the domestic flake caustic soda market maintained an upward trend, and the pre-holiday stocking atmosphere increased. The northern region is about to usher in important events, and some major producing areas may be short of supply. In late October, as the Spring Festival approaches, the downstream purchasing atmosphere increases. The supply and demand of factories in northwest China are smooth, and the inventory pressure is not strong. With the increase of production of downstream alumina plants at the end of the year, the pace of preparing flake caustic soda was accelerated. Traders' hoarding atmosphere has improved, driving the market turnover range. During the week, the upward adjustment of flake caustic soda plants was active, with the increase of 100-200 yuan/ton in some regions.