One Million Tonnes of U.S. Ethane Arrive as China Sets a New Import Record

Chinese petrochemical companies are adjusting their feedstock structure through actual procurement decisions.

Reuters reported that China imported around 1 million tonnes of ethane from the United States in April, setting a record high. The increase was driven by disruption to competing Middle Eastern feedstocks caused by the Iran war, while Chinese petrochemical companies increased U.S. ethane purchases under relatively strong margins.

The Financial Times also reported that the Iran war severely disrupted global oil-product supply, especially naphtha, a key petrochemical feedstock. China’s plastics industry has therefore turned to U.S. ethane as a more stable alternative. The report said U.S. ethane exports reached a record 776,000 barrels per day in March 2026, with nearly 75% shipped to China.

The real significance of this news is that Chinese petrochemical companies are reassessing feedstock security.

Ethane Is Not Just a Substitute, but a Risk Hedge

Ethane is an important cracking feedstock for ethylene production. With the development of the U.S. shale gas industry, ethane supply has become abundant and cost-competitive. Compared with naphtha cracking, ethane cracking delivers a higher ethylene yield and can provide stronger ethylene economics under certain pricing conditions.

However, China’s record imports of U.S. ethane are not only about price. The more important backdrop is instability in Middle Eastern feedstock supply, with naphtha, LPG, and other competing feedstocks disrupted. U.S. ethane has become a risk-hedging choice for Chinese petrochemical producers.

The increase in ethane imports reflects a shift from “lowest feedstock cost” toward “feedstock cost plus supply security.”

For large crackers, feedstock choice affects far more than unit cost. It influences operating rates, downstream product structure, customer delivery, and margin stability. When uncertainty around Middle Eastern supply rises, companies naturally look for more reliable alternatives.

Asia’s Long Dependence on Naphtha Exposes Vulnerability

Asia’s petrochemical system has long relied mainly on naphtha cracking. Naphtha cracking can produce ethylene, propylene, butadiene, aromatics, and other products, making it suitable for complex downstream chains. But this route is highly dependent on crude oil and refining systems, making it more exposed to Middle Eastern oil-product supply and shipping-route risks.

Once key routes such as Hormuz are disrupted, naphtha arrivals, prices, and regional supply-demand balances are affected. For China’s plastics industry, feedstock volatility transmits directly into polyethylene, polypropylene, ethylene glycol, styrene, and other products.

Middle East disruption is amplifying the cost and supply vulnerability of Asia’s naphtha-based petrochemical route.

This does not mean naphtha will be fully replaced by ethane. Naphtha cracking has a richer by-product slate and still supports large downstream chains. Ethane cracking is more concentrated, mainly producing ethylene, with limited contribution to propylene, butadiene, and aromatics.

Therefore, the more realistic trend is feedstock diversification rather than single-route replacement. Chinese petrochemical companies will dynamically balance naphtha, ethane, LPG, and other feedstocks to reduce single-source risk.

U.S.-China Ethane Trade Shows Unusual Resilience

U.S.-China relations remain tense in many areas, but ethane trade has shown unusual resilience.

The Financial Times noted that despite tensions over semiconductors, sanctions on Iranian oil, and other issues, ethane trade still shows mutual dependence. U.S. midstream companies are also expanding long-term supply contracts.

The reason is practical interest. The United States needs stable export markets to absorb ethane produced from shale gas, while China needs stable feedstocks to support its petrochemical and plastics industries. The two sides have formed strong complementarity in this product category.

Ethane trade shows that even in a complex geopolitical relationship, industrial-chain necessity can still create stable cooperation channels.

However, this supply chain is not risk-free. Ethane transportation requires specialized vessels and supporting storage and receiving infrastructure. Shipping capacity, port receiving capacity, route stability, and long-term contract arrangements will all affect trade volume. If logistics bottlenecks emerge, ethane import growth may also face constraints.

Feedstock Portfolio Capability Becomes a New Dimension of Petrochemical Competition

China’s rising imports of U.S. ethane show that petrochemical competition is entering the feedstock-portfolio stage.

In the past, the market focused more on plant scale, cost level, and downstream integration. Now, it also matters whether companies can switch flexibly among different feedstocks, reduce shocks through long-term contracts and global procurement, and maintain stable operations through diversified feedstock structures.

Future petrochemical competition will not only be plant competition. It will also be competition over feedstock maps and procurement capability.

This has deep industry implications. Companies with ethane receiving and cracking capabilities may gain cost advantages when Middle Eastern naphtha supply is disrupted. Companies relying on a single route may be more exposed to regional supply and price volatility.

At the same time, different feedstock routes change product structures. The ethane route strengthens ethylene supply and may affect polyethylene and ethylene glycol chains. The naphtha route is more important for propylene, butadiene, and aromatics. Feedstock switching is not only a cost issue. It can also affect the supply-demand structure of the chemical product chain.

China’s Petrochemical Supply Chain Reprices Its Security Boundary

China’s record U.S. ethane imports are a snapshot of changing global petrochemical trade. Middle East conflict is changing feedstock flows, U.S. ethane’s strategic value is rising, and Asian petrochemical companies are taking feedstock security more seriously.

This is not a short-term procurement adjustment. It is the natural result of rising risk awareness across the global petrochemical industry.

When feedstock supply is no longer taken for granted, petrochemical companies must redesign the security boundary of their supply chains.

In the future, Chinese petrochemical companies may place greater emphasis on long-term ethane contracts, receiving terminal construction, storage and transportation capability, plant flexibility, and diversified feedstock portfolios. Feedstock security will rise from a procurement issue to a source of value-chain competitiveness.

China’s record ethane imports signal that Asia’s petrochemical feedstock routes are being repriced. Against the backdrop of Middle East disruption and global supply-chain restructuring, companies with more flexible and stable feedstock portfolios will be better positioned to maintain resilience in the next stage of petrochemical competition.