Treasury Warns of Sanctions Risks Linked to China-Based Independent “Teapot” Oil Refineries
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Key facts
Source:US Treasury (UK HM Treasury, Open Government Licence v3.0)
The U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) has issued an alert to financial institutions regarding the sanctions risks posed by independent "teapot" oil refineries in China. The warning focuses on these refineries, primarily located in Shandong Province, for their ongoing involvement in importing and processing crude oil from Iran. According to the Treasury, these activities generate revenue that supports the Iranian military and weapons programs.
The alert highlights that some of these Chinese refineries have utilized the U.S. financial system to facilitate dollar-denominated transactions and acquire American goods. To mitigate these risks, OFAC is urging banks to implement stricter, risk-based controls and enhanced due diligence, particularly for transactions involving refineries in the Shandong region. The Treasury also emphasized the need for clear communication regarding sanctions compliance with correspondent banks.
The Treasury identified several methods used to bypass international restrictions, including the use of intermediary brokers and front companies operating in Asia and the United Arab Emirates. Additionally, the alert noted the use of a "shadow fleet" that employs deceptive maritime practices, such as falsifying documentation, manipulating vessel identities, and conducting ship-to-ship oil transfers.
Since March 2025, OFAC has designated several China-based teapot refineries that have processed billions of dollars in Iranian-origin oil. The Department of the Treasury stated it is prepared to use all available authorities, including the deployment of secondary sanctions against foreign financial institutions that continue to assist in Iran's oil trade.
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