The Maze: China does not need to own a country's entire ecommerce market to dominate its imported shelf. Across five major markets, only 4-16% of online purchases come from abroad. Yet China supplies 74-96% of that foreign slice. Brazil is the loudest example: 16% of ecommerce purchases are cross-border, and China captures 96% of them. France imports far less online, just 4%, but China still supplies 92%. Tariffs can raise the price of the route. They do not instantly replace the factories, assortment, or platforms behind it.
The concentration is broad, not local. China supplies 96% of Brazil's cross-border ecommerce purchases, 92% in both the United States and France, 85% in Germany, and 74% in the United Kingdom. Those markets span the Americas and Europe, with different income levels, local retailers, and shopping habits. The common layer is imported supply. Even the least concentrated market in this group still sources nearly three of every four foreign online purchases from China.
The denominator changes the story. Brazil's 96% applies to the 16% of ecommerce purchases made abroad. France's 92% applies to a much smaller 4% foreign slice. This is not China's share of all national ecommerce. It is control of the cross-border component. That distinction makes the strategic point sharper: domestic retail can remain large while the imported shelf becomes almost single-source. Merchants competing on imported assortment are therefore exposed to the same origin, freight, currency, and policy shocks—even when their national ecommerce markets look very different.
Factory access became a distribution advantage. ECDB classifies cross-border sales by a store's main market. Temu, SHEIN, and AliExpress sit close to Chinese production and sell that catalogue directly into other countries. Amazon's national domains, by contrast, often count as domestic ecommerce. The metric is not a customs audit, but it captures the operating model: Chinese platforms shortened the path from factory to feed, then used price, selection, and app distribution to make an imported order feel local.
Tariffs attack the parcel model, not the demand engine. Low-value shipment changes make direct delivery more expensive, but a concentrated supply base has several responses: absorb margin, raise prices, consolidate parcels, or move inventory into local warehouses. China still shipped an estimated US$250.1 billion of ecommerce goods abroad in 2025, with the United States receiving US$60.4 billion. The next competitive edge may be less about crossing a border cheaply and more about deciding which inventory crosses before the customer clicks.
Why it matters: Retailers should read these figures as a supply-chain warning, not a customs trivia question. When one origin controls most imported online demand, policy risk spreads through price architecture, assortment, fulfilment, and working capital at once. Chinese platforms can localise inventory and preserve factory economics. Domestic challengers can use faster delivery, trust, and compliance as wedges. The winners will not be the companies that predict the next tariff. They will be the ones that can reroute product, margin, and customer promise without rebuilding the business each time.
