April 27 News: Shaanxi Black Cat's 60,000-ton BDO unit has been under maintenance since April 10, scheduled to restart after the May Day holiday, with no spot quotations available. Chempricehub evaluates 1,4-butanediol with a bullish/bearish rating of +1. The maintenance of Shaanxi Black Cat's 60,000-ton BDO unit starting April 10 has led to reduced supply, and the planned restart after the May Day holiday indicates a short-term supply constraint. The absence of spot quotations reflects market tightness and nervousness. Reduced supply is expected to push spot prices higher, benefiting the market. The rating of +1 indicates a generally bullish outlook, as the maintenance scale is significant but not an extreme disruption. With no clear change in demand, price increases may be moderate.