China’s petrochem exports get a wartime boost

Chinese petrochemical producers are emerging as unexpected beneficiaries from the Iran-US war, using supply disruptions in the Gulf to offload excess production and gain new customers across Asia. Buyers in markets including Vietnam and Indonesia turned to Chinese suppliers as feedstock shortages disrupted Middle Eastern production, helping Chinese producers ease chronic oversupply while establishing new regional supply chains.

Why it matters: We've been saying geopolitical disruptions are reshaping commodity trade around resilience rather than pure cost — and petrochemicals are proving no exception. The war in the Gulf has given Chinese producers an opening to turn years of overcapacity into export market share, while Asian buyers have discovered alternative supply chains that may outlast the conflict.

The conflict disrupted supplies of feedstocks from oil and gas fields in the Gulf. Saudi Arabia, Qatar, and the UAE are major suppliers of polyethylene and other petrochemicals to Asia thanks to their abundant, low-cost oil and gas feedstocks — the Gulf exports nearly 76 mn tonnes of petrochemicals a year to some 90 countries, worth USD 52 bn and accounting for more than half the region's total chemical output.

When the war disrupted Gulf production and shipping (going in-and-out),, buyers were forced to source material elsewhere, opening the door for other exporters. Chinese producers were well-positioned to step in, thanks to large domestic inventories, expanding coal-to-chemicals production — which is less exposed to Middle Eastern hydrocarbons — and rising imports of US ethane feedstock.

The numbers show the size of the shift: China's net polyethylene imports collapsed to almost 35k tonnes in May from nearly 988k tonnes in February. The plunge flipped China from a major net importer to an almost balanced market within three months, as Chinese producers redirected surplus output into regional export markets while Asian buyers sought alternatives to disrupted Middle Eastern supplies. BloombergNEF analyst Philip Geurts described polyethylene as “the biggest story by far,” saying he had never seen such a sharp trade swing.

The shift extended beyond polyethylene: China became a net exporter of olefins for the first time in April and May — a swing equivalent to around 10% of global demand. Olefins are the basic chemical building blocks used to manufacture plastics, synthetic rubber, and textiles, making this one of the sharpest realignments in global petrochem trade since the conflict began.

The bigger picture: China exported a record 6.2 mn tonnes of commodity chemicals and plastics in May, up 6% from April, while shipments over March-May climbed 43% year-on-year. Exports are increasingly reaching not only Southeast Asia but also India, Turkey, Africa, and Latin America.

The new trade flows could prove sticky even if tensions ease. Gulf production is expected to recover, but the war exposed the risk of depending on a single supply-chain chokepoint, giving buyers another reason to diversify sourcing rather than revert entirely to previous suppliers. For Chinese producers, the conflict also arrived at a crucial moment, as the industry grapples with years of capacity expansion that has outpaced domestic demand.

China is expected to increase annual ethylene capacity — the most important olefin — from around 60 mn tonnes last year to some 80 mn tonnes by the end of the decade, adding pressure on Chinese producers to secure export markets and making the customer relationships forged during the conflict increasingly valuable long after tensions fade.

Our take: This is another example of a theme we've been tracking since the start of the conflict: geopolitical disruptions rarely create permanent shortages — they create new trade patterns, with beneficiaries and losers. Just as crude oil, LNG, and shipping routes have adjusted by finding alternative suppliers and paths, petrochemicals are now following the same course.