苯乙烯周报：四季度供需缺口增加，苯乙烯价格或将探底-20251018

1. Report Industry Investment Rating - No information provided in the report 2. Core Viewpoints of the Report - The escalation of the China - US trade war has led to a volatile downward trend in crude oil prices. The overall valuation of styrene is moderately low. The supply side of styrene faces significant pressure, while the demand side enters a seasonal peak season. After the large - scale downstream production of styrene is launched in the fourth quarter, the supply - demand gap may increase, and the futures price may reach the bottom [11][13]. - This week's forecast: For pure benzene (BZ2603), the reference volatility range is (5800 - 6100); for styrene (EB2511), the reference volatility range is (6800 - 7100). The recommended strategy is to wait and see [13]. 3. Summary According to the Table of Contents 01. Weekly Assessment and Strategy Recommendation - Market Conditions: The China - US trade war has escalated again, causing crude oil prices to fluctuate downward. The weekly decline of styrene shows (futures > cost > spot), the basis strengthens, the BZN spread rises, and the profit of non - integrated EB plants decreases [11]. - Cost: Last week, the price of pure benzene in East China fell by - 3.12%, and the pure benzene operating rate remained high and volatile [11]. - Supply: The utilization rate of EB production capacity is 73.61%, a month - on - month increase of 0.56% and a year - on - year increase of 8.73%, but a decrease of - 7.99% compared with the five - year average. According to the production plan, the greatest production pressure for the whole year is in the fourth quarter, and the supply side may face pressure under the background of high operating rates [11]. - Imports and Exports: In August, the domestic import volume of pure benzene was 4.412 million tons, a month - on - month decrease of - 13.13% and a year - on - year increase of 8.38%, mainly from the Middle East. The import volume of EB in August was 269,200 tons, a month - on - month increase of 21.77% and a year - on - year increase of 29.29%. The port inventory of pure benzene and the EB inventory in Jiangsu ports have been reduced from high levels [11]. - Demand: The weighted operating rate of downstream three S products is 38.81%, a month - on - month increase of 0.70%. The operating rate of PS is 55.00%, a month - on - month increase of 0.73% and a year - on - year decrease of - 2.36%. The operating rate of EPS is 41.00%, a month - on - month increase of 0.64% and a year - on - year decrease of - 31.28%. The operating rate of ABS is 73.00%, a month - on - month increase of 0.69% and a year - on - year increase of 19.09%. With the arrival of the seasonal peak season, downstream demand has slightly improved [11]. - Inventory: The in - plant inventory of EB is 186,900 tons, a month - on - month decrease of - 3.62% and a year - on - year increase of 6.48%. The EB inventory in Jiangsu ports is 196,500 tons, a month - on - month decrease of - 2.67% and a year - on - year increase of 372.36%. The port inventory has been reduced from high levels [12]. - Strategy: The recommended strategy is to wait and see, with a forecast range of 5800 - 6100 for pure benzene (BZ2603) and 6800 - 7100 for styrene (EB2511) [13]. 02. Futures and Spot Markets - The styrene price has been continuously declining, and multiple charts show the historical trends of styrene spot price, futures contract price, basis, trading volume, open interest, and spreads [16][20][22]. 03. Profit and Inventory - Inventory: Multiple charts show the historical trends of styrene port inventory, factory inventory, and pure benzene port inventory [37][39]. - Profit: The profit of styrene is fluctuating at a low level compared to the same period in history. Charts show the profit trends of ethylbenzene dehydrogenation and POSM processes, as well as the production capacity share of the top ten styrene producers [43][48]. 04. Cost Side - Pure Benzene Industry Chain: The profit of naphtha has rebounded significantly. Pure benzene has maintained inventory reduction in 2025, and the supply - demand gap will increase quarter - on - quarter in the fourth quarter. The price difference between the US and South Korea for pure benzene is fluctuating upward, and the inventory of caprolactam plants is oscillating at a high level [55][59][66]. - Production and Demand: A table shows the production and demand situation of pure benzene and its downstream products in 2025, including production capacity, production time, and supply - demand gaps [60]. 05. Supply Side - Production Capacity and Supply - Demand Gap: The supply - demand gap of styrene will increase in the fourth quarter of 2025. Tables show the production and demand situation of styrene and its downstream products, including production capacity, production time, and supply - demand gaps [106][108]. - Production and Import - Export: The styrene production volume is oscillating at a high level compared to the same period. Charts show the historical trends of styrene production, import volume, export volume, and operating rate [114][116][118]. 06. Demand Side - Downstream 3S Production Capacity: Charts show the production capacity, output, and growth rate trends of ABS, PS, and EPS [126]. - Operating Rate and Profit: The operating rates of EPS and PS are oscillating at a low level compared to the same period, while the operating rate of ABS has rebounded from a low level. Charts show the operating rates and production profits of EPS, PS, and ABS, as well as the inventory situations of downstream products [129][133][135]. - End - User Demand: The production volume of washing machines has a moderately high year - on - year growth rate, and charts show the sales volume, production volume, and inventory trends of household refrigerators and washing machines [157][158][150].