Styrene Market Dynamics Intelligence, Analysis, and Forecast (Recent Commodity Market Update)

I. Market Dynamics Intelligence

(A) Price Trends
1. Futures Market: On May 25, 2026, the Dalian Commodity Exchange (DCE) styrene front-month futures contract (2607) closed at RMB 8,968/ton, down RMB 150/ton from the previous trading day, with trading volume reaching 584,167 lots and open interest standing at 364,450 lots—a decrease of 8,056 lots week-on-week. On May 26, the front-month styrene futures contract settled at RMB 8,777.00/ton, representing a decline of 3.57%.
2. Spot Market: On May 26, Lihua Yi Weiyuan Chemical Co., Ltd. quoted its latest styrene price at RMB 9,200/ton, down RMB 150/ton from the prior trading day. In Jiangsu Province, the high-end spot transaction price stood at RMB 9,720/ton, while the low-end price was RMB 9,250/ton—resulting in a spread of RMB 470/ton.

(B) Inventory Status
1. Styrene Inventory: As of the week ending May 22, 2026, national styrene inventory totaled 146,410 tons, down 12,700 tons (–7.98%) week-on-week. Over the past month, national styrene inventory rose by 2,010 tons (+1.39%). As of May 18, 2026, the total styrene port inventory in Jiangsu Province amounted to 125,300 tons—down 4,500 tons (–3.47%) week-on-week; commercial inventory stood at 73,300 tons, up 14,500 tons (+24.66%) from the prior period.
2. Benzene Inventory: As of May 18, 2026, the total commercial benzene port inventory in Jiangsu Province stood at 148,000 tons—down 14,000 tons (–8.64%) from the prior period’s 162,000 tons, yet up 20,000 tons (+15.63%) year-on-year versus 128,000 tons in the same period last year.

(C) Supply Situation
1. Plant Operations: With planned shutdowns implemented at Zhejiang Petrochemical, Zibo Junchen, Yulong, Xinyang, and Sinochem Quanzhou, and load reductions at Lianyungang Petrochemical, Jiangsu Hongwei, and Tianjin Bohua, this week’s output decline exceeded initial expectations. Although Shandong’s styrene plant operating rates declined as of May 18, 2026, no additional scheduled maintenance is anticipated in the next cycle. Consequently, overall supply is expected to rise modestly—but vigilance remains warranted for potential early unscheduled maintenance.
2. Capacity Utilization: Domestic styrene plant output hovered around 259,600 tons, with an average capacity utilization rate of approximately 70.7%, down 2.22 percentage points week-on-week.

(D) Demand Situation
1. Downstream Consumption: As of May 21, 2026, China’s primary styrene downstream sectors (EPS, PS, ABS) consumed 250,600 tons—down 2,200 tons (–0.87%) week-on-week. For the upcoming cycle, aggregate downstream demand is forecast at ~254,500 tons, reflecting a slight increase over the current cycle.
2. Downstream Profitability & Operating Rates:
- EPS: As of May 21, sample EPS enterprise inventory stood at ~31,900 tons, up 13.12% week-on-week. EPS profitability decreased by RMB 139/ton week-on-week; downstream demand recovery remained sluggish, and procurement pace slowed, leading to significant inventory accumulation across sampled enterprises.
- PS: PS profitability edged down by RMB 28/ton week-on-week, remaining the most profitable short-term product among the three. As of May 21, 2026, industry inventory pressure remained moderate with limited fluctuation.
- ABS: As of May 21, 2026, domestic ABS finished-goods inventory totaled 202,500 tons—up 5,400 tons (+2.8%) week-on-week. ABS losses widened further this week, intensifying cost pressures on production facilities; some manufacturers reported weak sales and marginal inventory growth.

(E) Cost-Base Factors
1. Benzene: Accounting for ~65% of styrene production costs, benzene remains a core upstream feedstock. Reduced domestic benzene operating rates—coupled with shrinking South Korean exports—have tightened supply and elevated prices. As of May 18, 2026, Jiangsu’s benzene port commercial inventory declined 8.64% week-on-week. Recovering downstream demand provides support to benzene’s lower price range, suggesting narrow-range adjustments ahead and offering foundational support to styrene pricing.
2. Ethylene: Ethylene prices tracked upward crude oil movements, further squeezing margins for non-integrated producers reliant on externally procured benzene and ethylene.

(F) Policy & Trade Developments
1. Anti-Dumping Measures: Effective June 23, 2024, anti-dumping duties continue to be imposed on imported styrene originating from South Korea, Taiwan, and the United States for a five-year term. Duty rates remain unchanged from those stipulated in MOFCOM Announcement No. 43 (2018):
- South Korean companies: Hanwha Total Petrochemical Co., Ltd. – 6.2%; Yochun NCC Co., Ltd. – 6.2%; Lotte Chemical Corp. – 7.5%; LG Chem, Ltd. – 6.6%; SK Global Chemical Co., Ltd. – 6.6%; all other South Korean companies – 7.5%.
- Taiwanese companies: Formosa Chemicals & Fibre Corporation – 3.8%; all other Taiwanese companies – 4.2%.
- U.S. companies: LyondellBasell Chemical Company – 13.9%; Huamei Styrene Co., USA – 13.7%; INEOS Styrolution America LLC – 13.9%; Americas Styrene Company – 13.9%.
2. Import/Export Trade: As domestic styrene capacity and output expand, import volumes have contracted while export volumes have increased notably.

II. Market Analysis & Assessment

(A) Mixed Bullish and Bearish Factors
1. Bullish Drivers
- Supply Side: Increased scheduled and unscheduled plant maintenance has led to pronounced supply contraction; this week’s output decline surpassed expectations, and port inventories continue to deplete—providing tangible market support.
- Cost Side: Benzene port inventories—despite historically high levels—are trending downward; recovering downstream demand supports benzene’s lower price floor, and narrow-range benzene price adjustments are expected next week, underpinning styrene’s price floor.
2. Bearish Drivers
- Demand Side: Overall operating rates across the “three S” downstream sectors (EPS/PS/ABS) are trending downward amid subpar profitability—particularly ABS, where losses continue to widen—undermining styrene demand support.
- Market Sentiment: Futures markets exhibit strong bearish sentiment and heavy short-positioning, with futures prices weakening in tandem with spot prices.

(B) Market in a Fragile Equilibrium
The domestic styrene market currently operates in a fragile equilibrium characterized by constrained supply, soft demand, and volatile input costs. Short-term supply curtailment and cost-based support jointly establish a price floor, whereas downstream losses and seasonal demand weakness constrain upside potential. Consequently, the futures market remains range-bound and consolidative.

III. Outlook & Forecast

(A) Short-Term Forecast (1–3 Weeks)
Styrene prices are expected to trade with a mild upward bias in the near term. While overall downstream demand remains subdued, sustained production cuts, steady underlying demand, improved export shipments, and continued port inventory drawdowns are likely to lend positive momentum. Concurrently, benzene’s anticipated narrow-range adjustment will provide foundational price support to styrene.

(B) Medium-to-Long-Term Forecast
Looking ahead to June, as idled facilities gradually resume operations and supply recovers, price benchmarks may gradually drift lower—unless downstream demand improves commensurately. Investors are advised to closely monitor plant operation updates and inventory data, and to maintain flexibility in response to evolving fundamental conditions.