U.S. warns banks of sanctions risk over China ‘teapot' refineries handling Iranian oil

• Treasury Secretary Scott Bessent stated that Iran's main export terminal on Kharg Island is nearing storage capacity, which could force Tehran to cut production and lose about $170 million in daily revenue
• Iranian crude is typically transported via 'shadow fleet' tankers with manipulated location data, often relabeled as 'Malaysian blend' through ship-to-ship transfers to disguise origins
• The Treasury has already sanctioned Hengli Petrochemical (Dalian) Refinery, one of China's largest teapot refineries, along with four others, and is targeting port operators and logistics providers in Shandong Province

Summary: U.S. Sanctions Warning on Chinese Refineries Processing Iranian Oil

The U.S. Treasury issued a warning Tuesday to financial institutions regarding potential sanctions exposure if they conduct business with Chinese "teapot" refineries that process Iranian crude oil.

Key Facts and Figures

• China purchases approximately 90% of Iran's oil exports, with independent "teapot" refineries handling the majority of these imports
• Iran's Kharg Island export terminal is nearing storage capacity, potentially forcing production cuts
• Tehran could lose approximately $170 million in daily revenue if forced to reduce output
• Five Chinese refineries have been sanctioned, including Hengli Petrochemical (Dalian) Refinery, one of China's largest teapot refineries and Iran's biggest crude customers

Companies and Sectors

The warning particularly targets refineries in Shandong Province, along with port terminal operators and logistics providers linked to Iranian oil shipments. The Treasury has also sanctioned vessels in Iran's "shadow fleet" that manipulate location data to evade detection.

Market Implications

The move intensifies the Trump administration's "maximum pressure" campaign against Iran, aiming to cut revenue streams funding Iran's weapons programs and military. Chinese refineries have reportedly used the U.S. financial system for dollar-denominated transactions and procurement of American goods.

Iranian oil is frequently disguised through ship-to-ship transfers, blending with other supplies, and falsified documentation—commonly labeled as "Malaysian blend."

The warning comes ahead of President Trump's planned visit to Beijing and follows recent U.S.-Iran ceasefire arrangements, though tensions remain elevated with ongoing disputes over the Strait of Hormuz and Iranian port blockades.