Introduction: From 2024 to 2025, multiple integrated styrene units were commissioned in China, leading to a sustained expansion of domestic supply and a fundamental shift in the supply-demand landscape. The domestic market has moved away from its long-standing reliance on imports to fill supply gaps, gradually transitioning to periodic oversupply and beginning to rely on exports to absorb surplus capacity. In the first half of 2026, import volumes experienced a cliff-like decline, while export channels established through the 2025 surge continued to divert surplus supply. The stark contrast between import and export data clearly reflects the new industry dynamics of China's styrene sector.
I. Styrene Import Analysis
According to data, from January to May 2026, China's styrene imports totaled only 17,900 tons, a decrease of 78,700 tons compared to the same period in 2025, representing a drop of 81.47%. On a monthly basis, imports in January 2026 stood at 11,300 tons, the highest for the first half of the year; imports fell to 5,000 tons in February, and from March to May, only 1,600 tons of supplementary cargo arrived, with import demand nearly grinding to a halt.
The main reasons for the sharp decline in imports are domestic oversupply and the impact of geopolitical conflicts.
Concentrated domestic capacity expansion, sufficient self-sufficiency: Following the concentrated and sustained expansion of styrene production capacity over the past two years, even without new units coming online in the first half of 2026, existing integrated refining and chemical units have maintained high operating rates. Monthly production remained stable in the first half of the year, with domestic styrene supply sufficient to cover the rigid needs of downstream industries such as ABS, EPS, and PS across the board.
Geopolitical turmoil in the Middle East raises overseas costs, import arbitrage window remains closed: After the outbreak of geopolitical conflicts in the Middle East at the end of February, the Strait of Hormuz faced substantial blockades. The Middle East, the world's largest styrene export region, saw its external supply nearly interrupted. Additionally, disrupted shipping led to crude oil shortages for refineries in Japan and South Korea, limiting unit operations and causing a global supply reduction. Simultaneously, boosted by geopolitical tensions, upstream feedstock costs such as crude oil rose across the board. Overseas producers faced cost pressures on raw materials, and overseas styrene offers consistently exceeded domestic spot prices. With the price spread inverted, the import arbitrage window remained closed.
II. Styrene Export Analysis
From January to May 2026, China's styrene exports totaled 582,700 tons, an increase of 401,800 tons compared to the same period in 2025, representing a surge of 222.1%. Monthly analysis shows exports for January to May were 60,600 tons, 53,600 tons, 83,800 tons, 194,900 tons, and 189,900 tons, respectively. Exports in April and May exceeded 180,000 tons per month, forming a concentrated export peak and providing a sustained outlet for China's surplus supply in 2026.
Behind the sharp contraction in imports is the relatively mature development of China's styrene export channels. The main reasons for the significant increase in exports from January to May 2026 are as follows:
Concurrent impact of geopolitical conflicts and overseas unit maintenance, widening global styrene supply gap: The geopolitical conflict in the Middle East at the end of February restricted shipping through the Strait of Hormuz. Major styrene production bases in the Middle East declared force majeure and significantly reduced output, nearly cutting off external supply from the world's largest styrene export region. Key importing countries such as India, Turkey, and South Korea, which heavily rely on Middle Eastern supply, faced sudden feedstock shortages. At the same time, feedstock (crude oil, naphtha) supply shortages due to shipping constraints in the first half of 2026 prompted overseas refineries to simultaneously undergo their annual concentrated maintenance cycles, keeping styrene operating rates low. Coupled with the ongoing permanent shutdown of older overseas capacity, these multiple factors collectively widened the global styrene supply gap, leading overseas buyers to turn to China on a large scale for alternative supply.
Stable export supply capability of domestic integrated units, positive export arbitrage from price spreads: While import prices were inverted relative to domestic prices, a reverse arbitrage opportunity emerged from the export perspective. Overseas prices were higher than domestic prices, and domestic integrated refining and chemical enterprises, with stable production, proactively increased export contracting. Even with the concentrated maintenance of some non-integrated units in China in June, which temporarily tightened domestic supply, enterprises prioritized fulfilling overseas contracts, ensuring the steady release of export cargoes.
III. Overall Industry Landscape Summary and Future Outlook
The evolution of import and export data over the past two years indicates that China's styrene industry has formally moved past the stage of heavy reliance on imports and entered a new cycle centered on self-sufficiency and export balancing. In the short term, if geopolitical tensions in the Middle East ease and shipping through the Strait of Hormuz resumes, coupled with the concentrated restart of overseas styrene units, the global supply gap will narrow, the overseas-domestic arbitrage window will shrink, and domestic export volumes are expected to decline. In the medium to long term, the pattern of high operating rates for existing domestic capacity in the second half of 2026 is unlikely to change. If new units continue to come online, domestic oversupply pressure will persist, making exports a core mechanism for balancing domestic supply and demand and stabilizing market prices. The influence of imports on the domestic market will continue to diminish, with domestic supply-demand dynamics and overseas export demand becoming the primary variables driving the styrene market trend.
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