What is transshipment? Why AI chips reach China via Malaysia, Singapore and Thailand

AI chips rarely travel to China in a straight line. They are unloaded and loaded again. Transshipment means taking cargo off a ship or plane at an intermediate port or airport and putting it onto another carrier bound for a different destination. Hubs like Singapore, Hong Kong and Dubai do this every day, and it is entirely legal in itself.

The problem began when the US started restricting exports of advanced AI chips to China in 2022. Nvidia chips that cannot be shipped to China directly are sent legally to a third country such as Malaysia, Singapore or Thailand, where documents and labels change before they move on. The 30 servers Malaysian customs said it seized on October 28, 2026 followed exactly that pattern (see Malaysia seizes 30 AI chip servers). This guide explains what transshipment is, how AI chips are diverted, and how countries are responding.

For Korean readers, the topic is closer than it looks: Korean memory makers supply the high-bandwidth memory inside these Nvidia accelerators, and Korea itself controls the transit and transshipment of strategic goods under its own export rules.

1. Transshipment, transit and re-export — similar words, different things

In normal logistics, transshipment saves money. Big ships drop containers at a hub, and smaller ships carry them on to each destination. Air cargo works the same way. A free trade zone lets goods be stored and re-exported without duty, with lighter customs procedures.

In export controls, that lightness becomes a gap. Declare Malaysia as the destination at origin, reload with new papers in a Malaysian free zone, and the final destination disappears from the paperwork.

2. How AI chips are diverted

There is no single route. In the case charged in March 2026, US prosecutors said servers went through Taiwan to Southeast Asia, were moved into unmarked boxes, and then went on to China. The Malaysian cases ran from one Asian country, through Malaysia, to another Asian country. Origin is not always the US either; servers assembled in Taiwan can enter a diversion route from the start.

3. Enforcement cases by country

Singapore does not enforce US export controls directly. It prosecutes misleading US server suppliers about end users as fraud, and the proceeds as money laundering. The case first charged in February 2025 widened with new charges in April and July 2026. Singapore is a large billing location for Nvidia revenue, but the government has said only a small share of chips physically arrive there. The gap between billing address and delivery address has itself become a focus.

Malaysia has required permits for transit and transshipment since July 2025 and made two public airport seizures in 2026. Thailand has no chip-specific transshipment rule. In May 2026, reports named a Bangkok company as the intermediary in the 2.5 billion dollar US case. Taiwan said in October 2026 it will add AI servers and advanced chips to controlled items under its Foreign Trade Act, making unauthorized shipments a crime (see Taiwan moves to criminalize AI chip smuggling to China).

4. US rules — control follows the chip

The heart of US policy is that US control travels with the chip. A chip shipped legally to Malaysia still needs a US licence to go on to China. But Washington cannot police what happens inside a Malaysian warehouse, so real enforcement depends on transit-country law and customs.

The Commerce Department's May 2025 red flags include customers who never bought advanced chips before October 2022, sudden order spikes, residential addresses, buyers without data-center infrastructure, and companies with little online presence. Sellers who ignore such signs can be treated as having known about a violation. The broader US regime is covered in What AI chip export controls are.

5. Transit-country rules compared

Malaysia stands out because it covers chips that only pass through. Moving them between planes in the free zone requires notice 30 days in advance; customs cited that provision in the October 2026 seizure. Countries without chip-specific rules become places where routes can shift. The balloon effect, where squeezing one route pushes traffic to another, is the main limit on enforcement.

6. Frequently asked questions

Is transshipment illegal? No. A large share of world trade moves through hub ports and airports this way. The problem is moving controlled goods without a permit or with false documents.

Why move whole servers? Loose chips are conspicuous and must be reassembled. Complete servers look like ordinary data-center gear, are easier to declare, and work on arrival.

What happens to seized chips? The Malaysian cases are under investigation. Penalties and forfeiture are decided in court.

Does this affect Korea? Korea controls transit and transshipment of strategic goods under its own rules, and Korean HBM sits inside Nvidia accelerators, so tighter or looser diversion routes feed back into chip demand.

7. What remains open

• Final destinations: Neither Malaysian case disclosed the destination country; China has not been officially confirmed.
• Thai intermediary: The Bangkok company link rests on anonymous-source reporting; the company has not been charged.
• Chip Security Act: Reports conflict on how far the location-verification bill has advanced.
• Balloon effect: There are no public statistics on where routes moved after enforcement tightened.