When profit margins across the polyester chain are razor-thin due to overcapacity, one leading company has posted an H1 net profit of RMB 5.5 to 6.0 billion—a year-on-year surge of over 23 times. This is no cyclical fluke but a concentrated payoff from years of overseas refining investment and deep chain integration.
Core Engine: The Brunei Refinery's Location Dividend
China Customs data shows a persistent supply-demand gap for refined oil products in Southeast Asia, with crack spreads widening significantly in Q1 2026. Hengyi Petrochemical's Brunei refinery is a direct beneficiary. Based on the company's performance forecast, Q2 net profit grew 76%-101% quarter-on-quarter, demonstrating further margin expansion.
The Brunei plant's advantage goes beyond market conditions. It enjoys local tax incentives, market-based pricing, and lower freight and insurance costs, giving it per-ton profitability far above domestic peers. With limited new refining capacity in Southeast Asia and steady demand growth, this location dividend is unlikely to be replicated or eroded in the near term.
Chain Recovery: PTA and Nylon Margin Repair
Beyond refining, Hengyi's domestic chain is also showing positive signals. The PTA and polyester sectors have undergone years of capacity rationalization, with supply-demand dynamics materially improving. Industry data suggests that after the exit of some outdated capacity, leading players have gained pricing power, and PTA processing spreads are slowly recovering from historic lows.
Meanwhile, the company's nylon chain is entering a capacity release phase. Nylon, as a differentiated product, typically commands better margins than conventional polyester. Ramping up nylon capacity not only contributes incremental profits but also diversifies the product mix, reducing reliance on any single polyester grade.
Three Mega Projects: From 'Refining-Polyester' to 'Oil-Coal-Cloth' Transformation
If current high profits represent the bursting of existing assets, the three projects under construction will define Hengyi's growth ceiling for the next five years.
- Brunei Phase II: Optimized to 12 million tons/year capacity, producing diesel, PX, benzene and other high-value products, targeting completion by end-2028. Total Brunei capacity will then reach 20 million tons/year, making it the only overseas capacity addition among private mega-refiners in recent years.
- Xinjiang Coal-to-EG: Plans to produce 2.4 million tons/year of fiber-grade coal-to-ethylene glycol, expected to start production by H1 2028. This expands the feedstock base from oil to coal, helping hedge against oil price volatility.
- Hubei Circular New Materials: A 300,000 tons/year demonstration plant using waste textiles as feedstock instead of crude oil. Aligned with China's 'dual carbon' policy, the project will give Hengyi a unique 'oil-coal-cloth' multi-feedstock configuration upon completion.
If all three projects are realized, Hengyi will transform from a traditional refining-polyester player into a new materials platform with multiple raw material pathways and stronger anti-cyclical capabilities.
Sustainability: Certainty vs. Risk
For buyers and investors, the key question is: can this profit growth rate be sustained?
On the certainty side, the tight supply-demand balance for refined products in Southeast Asia is unlikely to reverse in the short term, so Brunei's high profitability should persist through the year. The PTA and polyester capacity landscape has improved, providing a basis for sustained margin recovery. The nylon project is still ramping up, so its incremental contribution will continue.
But risks cannot be ignored:
- A sharp drop in international crude oil prices could trigger inventory write-downs and narrow crack spreads, directly compressing refining margins.
- Brunei Phase II and the Xinjiang coal-to-EG project involve large investments and long construction periods, with risks of delays or cost overruns.
- Concentrating core assets in a single region (Brunei) exposes the company to geopolitical or policy changes that could affect feedstock supply stability.
- If downstream textile demand recovery disappoints, polyester margin repair will be constrained.