Full Breakdown
US Sanctions Target Chinese Refinery Over Alleged Iranian Oil Purchases
4/28/2026, 11:20:28 PM
Core Event: Treasury Sanctions on Hengli Petrochemical (Dalian) Refinery
On 24 April 2026 the U.S. Treasury Department’s Office of Foreign Assets Control added Hengli Petrochemical (Dalian) Refinery Co. to the Specially Designated Nationals list. The agency described the refinery as “one of Iran’s largest customers for crude oil and petroleum products” and sanctioned roughly 40 shipping firms it said belong to Iran’s “shadow fleet.” The action blocks U.S. persons from dealing with the refinery and freezes any U.S.-based assets.
Background & Context: Iran’s Oil Trade, “Teapot” Refineries, and U.S. Pressure
China imports more than 80 % of Iran’s exported crude, largely through privately owned “teapot” refineries that operate with limited exposure to the U.S. financial system. Since the start of the war in the Persian Gulf, the United States has used both naval blockades of the Strait of Hormuz and financial sanctions to curtail Tehran’s oil revenue. The latest sanctions arrive weeks before a scheduled meeting between President Donald Trump and President Xi Jinping, and follow a 2025 U.S. round of sanctions on other Chinese independent refiners.
Key Figures & Groups
- Hengli Petrochemical (Dalian) Refinery Co. – China’s second-largest independent refinery, 400,000 bpd capacity.
- Scott Bessent – U.S. Treasury Secretary, spokesperson for the sanctions.
- Lin Jian – Spokesperson for China’s Ministry of Foreign Affairs.
- Tommy Pigott – U.S. State Department spokesman.
- Shipping firms – Including Lisboa Shipping Company Limited, Ting Tao Company Limited, Yegua Trading Limited, Extensive Shipping Limited, Xifoides Group Limited, identified as part of the shadow fleet.
Data & Statistics
- Refinery capacity: 400,000 barrels per day.
- Share price fell about 10 % after the announcement.
- Hengli reported 2025 revenue of 201 billion yuan (? US$28 billion) and net profit of 7.1 billion yuan.
- The Treasury alleges the refinery purchased “billions of dollars” of Iranian oil since 2023.
- Approximately 40 shipping companies and vessels were sanctioned.
- Kpler data show China bought more than 80 % of Iran’s shipped oil in 2025.
Why It Matters
The United States aims to pressure Iran’s war financing while signaling leverage over China ahead of the Trump-Xi summit. Targeting a private Chinese refinery, rather than a state-owned giant, tests Beijing’s tolerance for U.S. unilateral measures. The sanctions also risk disrupting China’s “teapot” sector, prompting a shift toward yuan-denominated oil purchases and alternative payment channels such as CIPS. Global oil markets, already strained by the Gulf conflict, could see further price volatility if Chinese refiners adjust sourcing strategies.
Official Statements & Responses
- The U.S. Treasury, via Bessent, said it will “continue to constrict the network of vessels, intermediaries and buyers Iran relies on to move its oil to global markets.”
- State Department spokesman Tommy Pigott framed the measures as part of “broader efforts to curb what Washington describes as Iran’s illicit oil trade.”
- China’s foreign ministry, through Lin Jian, declared that “China always opposes unilateral sanctions that have no basis in international law” and urged Washington to stop “abusive sanctions and long-arm jurisdiction.”
- Hengli’s filing asserted that it “has never engaged in any trade with Iran” and that all suppliers guarantee non-sanctioned crude origins.
- The Chinese embassy in Washington called on the United States to “stop politicising trade and sci-tech issues and using them as a weapon.”
Criticism & Opposition
Commentators such as columnist Hua Xiangming described the timing as “an attempt to gain leverage at the negotiating table” ahead of peace talks. Liao Na of GL Consulting suggested the sanctions serve as a “bargaining chip” rather than a purely anti-Iran measure. Erica Downs of Columbia University’s Center on Global Energy Policy called the move “an escalation” that could ripple through Asian supply chains.
Conflicting Reports & Gaps
U.S. officials claim Hengli generated “hundreds of millions of dollars” for Iran’s military, while the company denies any Iranian trade. The Treasury cites “billions of dollars” of purchases, but no independent verification of shipment volumes is provided. Details on the specific vessels and cargoes remain undisclosed, leaving the exact scale of the alleged shadow-fleet activity unclear.
Verbatim Quotes
- “China always opposes unilateral sanctions that have no basis in international law,” — Lin Jian, Chinese Foreign Ministry spokesperson
- “will continue to constrict the network of vessels, intermediaries and buyers Iran relies on to move its oil to global markets.” — Scott Bessent, U.S. Treasury Secretary
- “has never engaged in any trade with Iran.” — Hengli Petrochemical, corporate filing
- “State Department spokesman Tommy Pigott said the measures are part of broader efforts to curb what Washington describes as Iran’s illicit oil trade.” — Tommy Pigott, U.S. State Department spokesman
- “We call on the U.S. to stop politicizing trade and sci-tech issues and using them as a weapon and a tool and stop abusing various kinds of sanction to hit Chinese companies,” — Chinese embassy spokesperson
What’s Next
The Trump-Xi summit is slated for early May, and U.S. officials have warned of possible secondary sanctions on banks handling Iranian-linked transactions. Hengli has indicated it will settle future crude purchases in yuan, signaling a broader shift away from the dollar. Monitoring of the sanctioned shipping firms and any further Treasury actions will determine the durability of the pressure on Iran’s oil revenues and on China’s private refining sector.
