On one hand, the supply of BR is relatively loose; On the other hand, the downstream start-up is reduced, and the demand for BR is weak; In addition, the price of raw butadiene fell sharply, dragging the cost side. Since December, Shunding enterprises have successively reduced the ex-factory price of BR. As of December 31, the ex-factory price of Daqing BR of PetroChina Northeast sales company was reported to be 14,000 RMB/ ton.In December 2021, the raw material butadiene fell sharply, and the cost dragged down butadiene rubber. According to the monitoring of SunSirs, as of December 31, the price of butadiene was 4,451 RMB/ ton, down 27.26% from 6,120 RMB/ ton at the beginning of the month.

　　In December 2021, the market trend of natural rubber fluctuated and consolidated. The price at the beginning of the month was 13,770 RMB/ ton, the low point in the month was 13,225 RMB/ ton, and the price at the end of the month was 13,748 RMB/ ton, down 0.16% from the beginning of the month.SunSirs analysts believe that the supply side has become loose and the cost side has fallen sharply. It is expected that the price of China BR will be weak in the later stage.