On December 30th, domestic companies in some butadiene enterprises participated in competitive bidding and sales: Shenghong Refining increased the price by 200 RMB/ton to 8500 RMB/ton; Yantai Wanhua sold 84 tons, with the starting bid at 8200 RMB/ton, and the transaction was between 8460 and 8480 RMB/ton; Satellite Chemical increased by 300 RMB/ton, with the execution price set at 8400 RMB/ton. Benefiting from fundamentals, the short-term trend of butadiene is relatively strong, requiring focus on downstream procurement situations. PriceSeek analyzed butadiene, giving a multi-sided rating: 1.5 The article shows that Shenghong Refining raised the price for butadiene by 200 RMB/ton to 8500 RMB/ton, Yantai Wanhua's bidding transaction reached an average price of 8460-8480 RMB/ton (higher than the starting bid of 8200 RMB/ton), and Satellite Chemical increased by 300 RMB/ton to 8400 RMB/ton, indicating that the supply in the spot market is tight or demand is strong. Benefiting from fundamentals, companies are actively raising prices and there is a clear premium in transactions, reflecting a strong market bullish sentiment, expecting the spot price to continue strengthening in the short term. The rating is +1.5 (between significant bullishness and general bullishness), as multiple companies synchronously raised their prices and the range of premium transactions is significant, but it's necessary to pay attention to potential fluctuations brought about by the continuous purchasing behavior of downstream buyers.