On February 5, the butadiene rubber market in East China showed a weak trend. The futures market fluctuated and declined, with traders lowering their offers by approximately 100–150 yuan per ton. Market negotiations remained deadlocked. Currently, mainstream offers for Daqing, Yangzi, and Qilu butadiene rubber are in the range of 12,900–13,150 yuan per ton, while some private brands are quoted at around 12,600–12,900 yuan per ton.