In the first half of 2026, the combined net profit of China's six listed polyester giants approached 30 billion yuan. The smallest increase nearly doubled, while Hengyi Petrochemical's profit surged over 23-fold year-on-year. This is no accidental earnings spike; it is a precise convergence of geopolitical dividends and industrial capacity rationalization.
The Underlying Logic of Profit Explosion
According to public filings, the core drivers are highly consistent: first, rising crude oil prices widened refining margins; second, improved supply-demand dynamics in PTA and polyester filament yarn. Hengli Petrochemical posted a net profit of approximately 7.2 billion yuan, up 136%. Rongsheng Petrochemical expects 5.0 to 5.2 billion yuan, a gain of over 730%. Shenghong reported 4.2 to 5.0 billion yuan, nearly ten times higher. Tongkun and Xinfengming recorded 4.1 to 4.5 billion yuan and 1.38 to 1.5 billion yuan, respectively.
Notably, Hengyi's growth was the most extreme, at 2,326% to 2,547%. Beyond domestic PTA and polyester business recovery, its Brunei refining project benefited from severe product shortages in Southeast Asia, driving massive earnings. CITIC Securities analysis confirms that Southeast Asian refined oil supply has been chronically tight, with spreads widening sharply in Q1 2026.
Geopolitical Dividends: Premium from Surging Oil Prices
The U.S.-Iran conflict escalated in early 2026, disrupting Strait of Hormuz shipping. Brent crude jumped from $61/barrel in January to $118/barrel in March, stabilizing around $99/barrel in Q2. For Chinese refiners, this oil price surge was a classic 'cost-push' tailwind.
China's diversified crude import channels have minimized supply disruption risks compared to single-source countries like Japan and South Korea. As international oil prices rose, domestic refiners secured stable feedstock costs while selling products at market-linked prices, widening margins. Mega-units like Hengli's 20-million-ton refinery and Rongsheng's Zhejiang Petrochemical 40-million-ton complex ran at full capacity, amplifying profit elasticity through scale.
Anti-Involution: Pricing Power Returns via Capacity Exit
If geopolitical dividends are 'heaven's timing', then anti-involution is 'human harmony'. Over the past two years, the PX-PTA-polyester filament yarn chain suffered from 'involutionary losses', with PTA losing up to 200 yuan per ton. In 2026, the situation reversed fundamentally.
First, no new PTA capacity came online, while outdated capacity at home and abroad accelerated exit, ceding market share to integrated leaders. Second, in late 2025, top fiber producers reached a voluntary production cut consensus, actively reducing operating rates for mainstream POY and FDY products, easing oversupply. Coupled with stricter approval for new capacity under dual-carbon policies, the supply side contracted in an orderly manner.
Xinfengming's filing explicitly attributes its performance surge to 'optimized industry supply-demand patterns'. Tongkun cites 'significant repair of PTA and polyester filament yarn processing spreads and steady industry prosperity'. Research reports indicate that the industry expansion cycle is nearing its end, and anti-involution policies will further improve supply-demand balance.
Chain-Wide Benefits: From Refining to Polyester
This boom is not isolated to a single segment. The entire chain from PX to PTA to polyester filament is benefiting. Shenghong owns 2.8 million tons/year of PX and 6.3 million tons/year of PTA, with total aromatics capacity exceeding 10 million tons. Hengli holds 16.6 million tons/year of PTA. This upstream self-sufficiency maximizes gains when spreads widen.
Downstream, polyester filament prices have risen in tandem. Tongkun and Xinfengming, as duopoly leaders, directly benefit from spread repair. Xinfengming's non-recurring net profit growth approached 140%, while Tongkun's reached 268% to 306%.
Concerns and Outlook: How Long Will the 'Money Printer' Last?
Despite stellar H1 results, sustainability remains uncertain. Middle East tensions escalated again after June, driving oil prices higher. For refiners, excessively high oil prices may compress downstream demand, especially with textile and apparel end-use not yet strongly recovered.
Moreover, anti-involution gains require ongoing maintenance. If oil prices fall or demand weakens, overcapacity pressure could return. Hengyi's Brunei Phase II and coal-to-ethylene glycol projects are under construction; their capacity release pace will directly impact future supply-demand balance.