US Treasury Issues Sanctions Warning to Banks Over Chinese 'Teapot' Refineries Handling Iranian Oil

The US Treasury has issued a stern warning to financial institutions about the risk of sanctions if they engage with Chinese 'teapot' refineries that process Iranian oil. These small independent refineries are central to China’s import of Iranian crude, which accounts for about 90% of Iran’s oil exports.

This move is part of the US's ongoing 'maximum pressure' campaign aimed at cutting off revenue streams to Iran, especially amid heightened tensions and an upcoming visit by former President Donald Trump to Beijing. The Treasury emphasized the need for enhanced due diligence on transactions involving these refineries and related entities.

US Treasury Targets Chinese 'Teapot' Refineries Over Iranian Oil

The US Treasury warned banks on Tuesday that they could face sanctions if they facilitate transactions with Chinese refineries known as 'teapots' that import and process Iranian crude oil. These refineries, mostly located in Shandong province, are responsible for the majority of China's Iranian oil imports.

Treasury officials highlighted that revenue from these transactions ultimately supports the Iranian regime, including its weapons programs and military. Some of these refineries have even used the US financial system for dollar-denominated transactions and to procure US goods.

Complex Shipping Tactics and 'Malaysian Blend' to Obscure Iranian Oil Origins

Iranian crude is often transported to Chinese teapot refineries using a 'shadow fleet' of sanctioned tankers that manipulate location data to evade detection. Shipments frequently involve multiple ship-to-ship transfers, sometimes using scrapped vessels in the Persian Gulf or Strait of Malacca to hide their origins.

To further disguise the oil's origin, Iranian crude is sometimes blended with oil from other countries or relabeled with forged documents, a practice the Treasury refers to as the 'Malaysian blend.'

Sanctions Expansion and Strategic Timing Ahead of Trump’s China Visit

The Treasury has recently sanctioned Hengli Petrochemical (Dalian) Refinery, one of China's largest teapot refineries and a major buyer of Iranian crude and petroleum products. Four other teapot refineries, along with port terminal operators and logistics providers linked to Iranian oil shipments in Shandong Province, have also been sanctioned.

This warning comes less than a month before former President Donald Trump’s planned visit to Beijing, where trade and investment discussions are expected. The US continues to apply maximum pressure on Iran to cut off its oil revenue amid ongoing geopolitical tensions.

Diplomatic Tensions and Ceasefire Amid Ongoing Blockades

Despite an indefinite ceasefire announced by Trump, tensions between Washington and Tehran remain high. Iran has not reopened the Strait of Hormuz, and the US maintains its blockade of Iranian ports.

The Treasury will continue to exert maximum pressure and any person, vessel, or entity facilitating illicit flows to Tehran risks exposure to US sanctions.—US Treasury Secretary Scott Bessent

China’s Foreign Minister Wang Yi recently expressed opposition to what Beijing calls the 'abuse of force and illegal unilateral sanctions,' underscoring the complex diplomatic landscape surrounding the issue.

Looking Ahead: Heightened Scrutiny and Global Implications

With the US intensifying sanctions enforcement and expanding its scope to include related logistics and port operators, financial institutions worldwide are urged to conduct enhanced due diligence. The evolving situation signals continued geopolitical friction and challenges for global oil markets.