Introduction#
The United States is ramping up its efforts to disrupt Iran’s main source of income by focusing on privately operated Chinese refineries, known as "teapot" refiners.
Sanctions on Chinese Refiners#
Recent reports indicate that these independent refineries are crucial for China to bypass international sanctions, sending billions of dollars to Iran each year. The U.S. Treasury Department has imposed sanctions on a unit of Hengli Petrochemical and 40 related shipping companies, accusing them of purchasing large quantities of Iranian oil.
Understanding the 'Teapot' Sector#
The "teapot" refiners, mainly located in Shandong province, operate separately from China’s large state-owned oil companies. This independence allows them to engage in transactions with less exposure to the U.S. financial system, often using Chinese yuan instead of U.S. dollars. Analysts estimate that Iranian oil made up about 12% of China’s oil imports in 2025, amounting to around 1.4 million barrels per day.
The Challenge of Sanctions Evasion#
To facilitate this trade, a complex network has developed. Organizations like United Against Nuclear Iran (UANI) have identified nearly 600 ships suspected of secretly transporting Iranian oil, a significant rise from just 70 vessels in 2020. These ships often employ tactics like turning off tracking devices and transferring oil at sea to hide the origins of their cargo. The U.S. Treasury has warned that banks assisting these refiners may face additional sanctions.
China's Response and Future Implications#
China has defended its teapot refiners, claiming that U.S. sanctions lack legal basis. By using private firms for Iranian oil trade, China secures cheaper energy while distancing its state-owned companies from the sanctions. Although Hengli Petrochemical has denied the allegations, its revenue has reportedly tripled since 2018, reaching around $30 billion last year. For the U.S., effectively disrupting this illegal oil trade poses a significant challenge, with experts suggesting that more aggressive actions may be necessary. Currently, these teapot refiners have evolved from a domestic issue to a key component of China’s energy strategy.