Last week (11.1-11.5), the NBR market rose slightly. According to the monitoring of SunSirs, the price of NBR was 24,950 RMB/ ton as of November 5, up 0.2% from the beginning of the week.The ex-factory price of China domestic NBR increased. According to the monitoring of SunSirs, Lanzhou Petrochemical N41E reported 22,200 RMB/ ton as of November 5; At present, 3305E is reported as 23,100 RMB/ ton; 3308E quoted 24,200 RMB/ ton. Some manufacturers control issuing orders, and the market supply is tight. There is little change in the start-up of the downstream rubber products industry, and the price of NBR is strong.Raw butadiene fell and the cost side was weak. According to the monitoring of SunSirs, as of November 5, the price of butadiene was 7,453 RMB/ ton, down 6.73% from 7,991 RMB/ ton at the beginning of the week.SunSirs NBR analysts believe that the tight supply of goods in the market is still tight, and the market price of NBR in China is expected to remain high in the short term.