In the first half of 2026, China's six leading polyester conglomerates—Hengli, Hengyi, Rongsheng, Shenghong, Tongkun, and Xinfengming—delivered earnings that stunned the market. Hengli posted a net profit of approximately RMB 7.2 billion, up 136% year-on-year; Hengyi reported RMB 5.5-6.0 billion, a staggering 2,326-2,546% surge; Shenghong achieved RMB 4.2-5.0 billion, up 987-1,194%; Rongsheng earned RMB 5.0-5.2 billion, up 730-763%; Tongkun recorded RMB 4.1-4.5 billion, up 273-310%; and Xinfengming posted RMB 1.38-1.5 billion, up 94-111%. These figures represent more than a cyclical recovery—they reflect a dual windfall from geopolitical premiums and supply consolidation.
Geopolitical Windfall: The Oil Price Bonanza
Early 2026 saw escalating US-Iran tensions disrupt shipping through the Strait of Hormuz, driving Brent crude from $61/barrel in January to $118/barrel in March, with a Q2 average around $99/barrel. For integrated refiners with full polyester chains, rising oil prices brought two benefits: inventory gains and wider processing spreads for refined products and chemicals. Hengyi's Brunei refinery directly benefited from tight Southeast Asian product supply. Chinese refiners, with diversified crude import sources, faced less supply disruption than Japanese or Korean peers and emerged as net beneficiaries of the oil price surge.
Anti-Involution: Structural Gains from Capacity Consolidation
The PX-PTA-polyester filament chain had suffered 'involutionary losses' for two years, with PTA margins hitting minus RMB 200/ton. In 2026, the dynamic reversed. No new PTA capacity came online, while outdated capacity at home and abroad exited faster, ceding market share to integrated leaders. By end-2025, major polyester fiber producers had agreed on voluntary output cuts for POY and FDY, easing oversupply. Xinfengming's announcement explicitly cited improved supply-demand balance as the core driver. Tongkun benefited from margin recovery in PTA and polyester filament, plus higher earnings from its stake in Zhejiang Petrochemical. This profit recovery is not a fleeting cyclical bounce but a structural improvement as capacity consolidation nears its end.
Chain-Wide Benefits: From Refining to Polyester
The profit structures of the six giants reveal the transmission path. Hengli, with its 20 million-ton/year integrated refining-chemical complex and 16.6 million-ton/year PTA capacity, ran at high utilization to maximize cost advantages. Rongsheng leveraged its mega-refining units, upgrading technology to boost flexible production and amplify margins amid rising crude. Shenghong's aromatics chain, with total capacity exceeding 10 million tons, provided a stable profit base. From refining to PTA to polyester, each link's margin recovery was locked in by integrated leaders.
Sustainability Concerns: Oil Prices and Demand Tests
Despite stellar H1 results, risks remain. First, the geopolitical premium is highly uncertain—a de-escalation in Middle East tensions would compress inventory gains and processing spreads. Second, downstream textile demand may struggle to absorb current polyester prices. The ability of polyester filament prices to pass through to end markets—apparel, home textiles—is unclear. Tongkun's warning that its associate Zhejiang Petrochemical's data is unaudited and subject to adjustment highlights the volatility risk from equity-accounted investments.