纯苯小幅去库，苯乙烯供应压力持续

Group 1: Report Overview - Report Title: Pure Benzene & Styrene Daily Report [1] - Report Date: August 11, 2025 [2] - Report Author: R & D Department of Tonghui Futures [3] Group 2: Investment Rating - No investment rating information provided Group 3: Core Views - Pure Benzene: Supply increases slightly due to new installations, demand remains stable, inventory decreases slightly. The supply - demand situation may improve marginally in August - September, but the improvement is limited due to high hidden inventory and weak terminal consumption [4] - Styrene: Supply is sufficient, demand is weak, showing a pattern of increasing supply and decreasing demand. It will remain in oversupply in August - September, but the relatively strong price of pure benzene provides some support [5] Group 4: Daily Market Summary Fundamental Information - Price: On August 8, the styrene main contract closed down 0.84% at 7,235 yuan/ton, with a basis of 60 (+11 yuan/ton); the pure benzene main contract closed down 0.70% at 6,204 yuan/ton [3] - Cost: On August 8, Brent crude oil closed at $63.9/barrel (-$0.5/barrel), WTI crude oil closed at $66.4/barrel (-$0.5/barrel), and the spot price of pure benzene in East China was 6,107.5 yuan/ton (-37.5 yuan/ton) [3] - Inventory: Styrene sample factory inventory was 211,000 tons (-6,000 tons), a 2.71% MoM decrease; Jiangsu port inventory was 159,000 tons (-5,000 tons), a 3.05% MoM decrease; pure benzene port inventory was 163,000 tons (-7,000 tons), a 4.12% MoM decrease [3] - Supply: A new styrene plant in Shandong was put into operation, with overall stable supply. Weekly styrene output was 359,000 tons (-2,000 tons), and factory capacity utilization was 77.7% (-1.2%) [3] - Demand: The capacity utilization rates of downstream 3S varied. EPS capacity utilization was 43.7% (-10.6%), ABS was 71.1% (+5.2%), and PS was 55.0% (+1.7%) [3] Views - Pure Benzene: Supply increases slightly, demand is stable, and inventory decreases due to typhoon - affected arrivals. The supply - demand pattern may improve marginally in 8 - 9 months, but the improvement is limited [4] - Styrene: Supply is sufficient, demand is weak, and it is expected to remain in oversupply in 8 - 9 months. However, the strong pure benzene price provides support [5] Group 5: Industry Chain Data Monitoring Price Data - Styrene: The main contract price decreased by 0.84% to 7,235 yuan/ton, and the spot price increased slightly [7] - Pure Benzene: The main contract price decreased by 0.70% to 6,204 yuan/ton, and prices in different regions also showed slight declines [7] - Upstream: Brent crude oil and WTI crude oil prices decreased, while naphtha prices remained unchanged [7] Production and Inventory Data - Production: Styrene production decreased slightly to 359,000 tons, and pure benzene production increased to 446,000 tons [8] - Inventory: Styrene and pure benzene inventories all decreased [8] Capacity Utilization Data - Styrene: Capacity utilization decreased to 77.7% [9] - Pure Benzene Downstream: The capacity utilization of some products changed, such as a decrease in caprolactam and an increase in adipic acid [9] - Styrene Downstream: EPS capacity utilization decreased significantly, while ABS and PS increased [9] Group 6: Industry News - China's shale cracking raw material supply affects naphtha costs, with expected record - high naphtha imports in 2025 [10] - Global diesel shortage supports refinery profits, having a structural impact on the crude oil and chemical chain [10] - India accelerates petrochemical expansion to counter China's dominance [10] Group 7: Industry Chain Data Charts - The report provides charts on pure benzene price, styrene price, styrene - pure benzene spread, inventory, and capacity utilization [11][21][22]