供需格局边际改善，纯苯苯乙烯震荡

Report Industry Investment Rating - Not provided in the content Core Viewpoints of the Report - For pure benzene, the supply shows a slight increase with the overall supply rising due to the increase in开工率. The demand is also increasing, but the actual demand growth is slow due to low profits. There is a slight decline in port inventory this week, and the supply - demand pattern is expected to improve in August - September, but the improvement space is limited considering high hidden inventory and insufficient terminal demand [5]. - For styrene, the supply pressure remains high with new capacity coming online, but the demand from EPS and PS sectors has increased, and there is a de - stocking trend in inventory. The supply - demand surplus is expected to ease marginally in August - September, and attention should be paid to the implementation of new capacity and exports [6]. Summary by Relevant Catalogs 1. Daily Market Summary (1) Fundamental Information - Price: On August 18, the styrene main contract closed down 0.14% at 7,230 yuan/ton with a basis of 40 (+0 yuan/ton); the pure benzene main contract closed down 0.05% at 6,186 yuan/ton [4]. - Cost: On August 18, the Brent crude oil main contract closed at 62.8 (-1.2 dollars/barrel), the WTI crude oil main contract closed at 65.9 (-1.0 dollars/barrel), and the spot price of East China pure benzene was 6,095 yuan/ton (-5 yuan/ton) [4]. - Inventory: Styrene sample factory inventory was 20.9 tons (-0.3 tons), a 1.3% de - stocking; Jiangsu port inventory was 14.9 tons (-1.0 tons), a 6.42% de - stocking; pure benzene port inventory was 14.6 tons (-1.7 tons), a 10.43% de - stocking [4]. - Supply: A new styrene plant in Shandong was put into operation, and the overall supply remained stable. The weekly styrene output was 36.9 tons (+1.0 tons), and the factory capacity utilization rate was 78.2% (+0.5%) [4]. - Demand: The capacity utilization rates of downstream 3S varied. EPS capacity utilization rate was 58.1% (+14.4%), ABS was 71.1% (+0%), and PS was 56.7% (+1.7%) [4]. (2) Views - Pure benzene: The supply is increasing, the demand is also rising but the actual increase is slow. There is a slight de - stocking in ports this week. The supply - demand pattern shows signs of improvement in August - September, but the improvement space is limited [5]. - Styrene: The supply pressure is high, the demand has increased in some sectors, and there is a de - stocking trend. The supply - demand surplus is expected to ease marginally in August - September [6]. 2. Industrial Chain Data Monitoring (1) Styrene & Pure Benzene Prices - Styrene futures main contract price changed from 7,238.0 to 7,240.0, a 0.03% increase; spot price changed from 7,656.0 to 7,596.0, a 0.78% decrease; basis changed from 67.0 to 40.0, a 40.30% decrease [8]. - Pure benzene futures main contract price changed from 6,179.0 to 6,189.0, a 0.16% increase; East China price changed from 6,105.0 to 6,100.0, a 0.08% decrease; South Korea FOB price changed from 732.5 to 733.5, a 0.14% increase; US FOB price changed from 799.5 to 796.5, a 0.38% decrease; China CFR price remained unchanged [8]. (2) Styrene & Pure Benzene Output and Inventory - Styrene output in China increased from 35.9 to 36.9 tons, a 2.76% increase; pure benzene output decreased from 44.6 to 44.5 tons, a 0.18% decrease [9]. - Styrene port inventory in Jiangsu decreased from 15.9 to 14.9 tons, a 6.42% decrease; domestic factory inventory decreased from 21.1 to 20.9 tons, a 1.29% decrease; pure benzene port inventory decreased from 16.3 to 14.6 tons, a 10.43% decrease [9]. (3) Capacity Utilization Rates - For pure benzene downstream, styrene capacity utilization rate increased from 77.7 to 78.2, a 0.45% increase; caprolactam increased from 88.4 to 93.7, a 5.31% increase; phenol decreased from 77.1 to 77.0, a 0.07% decrease; aniline decreased from 73.5 to 71.6, a 1.89% decrease [10]. - For styrene downstream, EPS capacity utilization rate increased from 43.7 to 58.1, a 14.41% increase; ABS remained at 71.1, a 0.00% change; PS increased from 55.0 to 56.7, a 1.70% increase [10]. 3. Industry News - China's shale cracking raw material supply is affected by trade and capacity, pushing up naphtha costs, and China is expected to increase naphtha imports to a record 1,600 - 1,700 tons in 2025 [11]. - The global diesel shortage supports refinery profits, which has a structural impact on the crude oil and chemical chains [11]. - India is accelerating petrochemical expansion to counter China's dominant position in the global petrochemical market [11].