January 12th news: Xinjiang Lanshan Tunhe's BDO Phase I 100,000-ton unit is currently shut down; the Phase II 104,000-ton unit was shut down on January 6th for catalyst replacement and is expected to restart on January 14th; the Phase III 104,000-ton unit is operating stably. Chempricehub analysis of 1,4-butanediol, supply-demand score: +1.5. Xinjiang Lanshan Tunhe's BDO Phase I 100,000-ton unit is shut down, and the Phase II 104,000-ton unit has been shut down since January 6th for catalyst replacement, with an expected restart on January 14th. Only the Phase III 104,000-ton unit is operating stably. This results in a total supply reduction of approximately 204,000 tons, accounting for 66% of the company's total capacity. The short-term supply tightness may drive up spot prices. The score of +1.5 indicates a relatively strong positive impact, as the supply disruption is significant but not permanent. If demand remains stable, it will support upward price movement.