能源化工合成橡胶周度报告-20250928

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - The synthetic rubber market is expected to operate weakly in the short term. The butadiene market will experience short - term fluctuations and is likely to enter a weak pattern in the medium to long term due to supply pressure [2][4][5]. - For cis - butadiene rubber, the short - term trend is oscillatory and under pressure, with a neutral downward drive. However, from a valuation perspective, the decline rate is expected to slow down. The market presents a pattern of both increasing supply and demand, but the supply growth rate is higher than the demand growth rate, leading to increased inventory pressure [4]. 3. Summary Based on Relevant Catalogs 3.1 Butadiene Fundamental Analysis 3.1.1 Supply - In the current cycle (20250919 - 0925), the estimated weekly output of Chinese butadiene industry sample enterprises was 103,000 tons, a week - on - week increase of 2,100 tons or 2.03%. Next week, the estimated weekly output of Chinese butadiene sample enterprises will be around 105,900 tons, continuing to increase [5]. - To support the expansion of downstream industries such as ABS, SBS, styrene - butadiene, and cis - butadiene, butadiene production capacity is continuously expanding, with the expansion speed and amplitude slightly faster than that of downstream industries at certain stages [10]. 3.1.2 Demand - In the synthetic rubber sector, the operating rates of cis - butadiene rubber and styrene - butadiene rubber remain high, maintaining a year - on - year high demand for butadiene. With the resumption of cis - butadiene rubber plants, the rigid demand for butadiene from synthetic rubber is expected to increase [5]. - In the ABS sector, due to high inventory pressure, the demand for butadiene is expected to remain constant with limited incremental demand. In the SBS sector, the operating rate has slightly increased, and the demand for butadiene remains at a rigid level with little change [5]. 3.1.3 Inventory - In the current cycle (20250918 - 0924), the total inventory of domestic butadiene samples has rebounded, with a week - on - week increase of 6.72%. Among them, the inventory of sample enterprises decreased by 3.44% week - on - week, while the inventory of sample ports increased significantly by 20.13% week - on - week. As of September 24, the latest inventory at East China ports was about 27,750 tons, an increase of 4,650 tons from the previous cycle [5]. 3.2 Synthetic Rubber Fundamental Analysis 3.2.1 Cis - Butadiene Rubber Supply - In the current cycle, the production of high - cis butadiene rubber was 26,700 tons, a decrease of 1,300 tons or 4.75% from the previous week. The capacity utilization rate was 66.41%, a decrease of 3.31 percentage points from the previous week. It is expected that the cis - butadiene rubber plants of Haopu New Materials and Taixiang Yubu will resume operation in the next cycle [4]. - The theoretical static valuation range of cis - butadiene rubber futures is 10,900 - 11,800 yuan/ton, and the dynamic valuation range is expected to gradually decline due to the increase in butadiene arrivals [4]. 3.2.2 Cis - Butadiene Rubber Demand - In terms of rigid demand, it is expected that the capacity utilization rate of tire sample enterprises will significantly decline in the next cycle. During the "National Day" holiday, some enterprises plan to take a 5 - 8 - day holiday starting from September 30 or October 1, which will have a significant impact on the capacity utilization rate of sample enterprises next week [4]. - In terms of substitution demand, the price difference between the NR - BR main contracts currently remains in the range of 800 - 1,000 yuan/ton, and the substitution demand remains high. Therefore, the overall demand for cis - butadiene rubber maintains a year - on - year high growth rate [4]. 3.2.3 Cis - Butadiene Rubber Inventory - As of September 24, 2025, the inventory of domestic cis - butadiene rubber sample enterprises was 32,300 tons, a decrease of 1,400 tons or 4.21% from the previous cycle. The inventory of sample production enterprises slightly increased, while the inventory of sample trading enterprises decreased [4].