News on December 29th: On December 29th, the bidding and sales situation of some domestic butadiene enterprises: Shenghong Refining increased by 200 yuan/ton to 8,200 yuan/ton; Yantai Wanhua sold 84 tons externally, with a starting bid of 7,900 yuan/ton; Satellite Chemical increased by 100 yuan/ton, executing at 8,100 yuan/ton. Supported by favorable fundamentals, the short-term trend of butadiene is relatively strong, but constrained by downstream rigid demand procurement, the increase may be limited. It is necessary to focus on downstream procurement situations. Chempricehub analyzes butadiene, with a long-short score: 1.5. Enterprises have raised the ex-factory price of butadiene (such as Shenghong Refining to 8,200 yuan/ton, Satellite Chemical to 8,100 yuan/ton). Supported by favorable fundamentals, spot prices are strengthening in the short term, reflecting tight supply or improved demand. Combined with butadiene rubber futures data (such as the closing price of the 2603 contract at 11,640 yuan/ton, an increase of 175 yuan), the futures market shows an upward trend, and rising raw material costs may push up derivative prices. However, downstream rigid demand procurement limits the increase. It is necessary to closely monitor changes in demand to avoid excessive optimism.